Rolling brush assembly for a robotic vacuum cleaner and robotic vacuum cleaner

Abstract

The application relates to a rolling brush assembly and a sweeping robot. Based on the application, the rotating main shaft of the rolling brush assembly can have a hollow shaft cavity and a mounting slot penetrating from the outer shaft wall to the hollow shaft cavity, wherein the mounting slot is inserted with a fixed-tooth row member and a movable-tooth row member, and the hollow shaft cavity is internally provided with a moving member. Based on the transmission connection of the moving member with the fixed shaft assembly inserted into the hollow inner cavity and the movable-tooth row member, the moving member can reciprocate in the axial direction during the rotation of the rotating main shaft relative to the fixed shaft assembly, and the cutting motion of the movable-tooth teeth of the movable-tooth row member relative to the fixed-tooth teeth of the fixed-tooth row member is caused by the reciprocating movement. Therefore, by the cutting motion of the movable-tooth teeth protruding from the outer shaft wall relative to the fixed-tooth teeth, the rolling brush assembly can have the ability to actively cut the filament-like dirt wrapped around the outer shaft wall of the rotating main shaft.

Description

Technical Field

[0001] This application relates to the field of intelligent cleaning, and in particular to a roller brush assembly for a robotic vacuum cleaner, and a robotic vacuum cleaner. Background Technology

[0002] A robotic vacuum cleaner includes a mobile chassis, a roller brush assembly, a suction component, and a dust collection component (such as a rigid dust collection box or a flexible dust collection bag). The roller brush assembly can perform a sweeping operation on the area below the mobile chassis using cleaning brushes that extend radially from the rotating spindle.

[0003] For discrete dirt such as dust and food crumbs, the cleaning brush can pick them up and bring them into the robot vacuum's interior, where they are then drawn into the dust collection component by the suction airflow generated by the suction component. However, fine, fibrous dirt such as hair may become entangled in the roller brush assembly, preventing it from being drawn into the dust collection component by the suction airflow generated by the suction component.

[0004] For fine filamentous dirt, existing technologies attempt to set a static cutting edge in the outer area of ​​the cleaning brush and cause the cleaning brush to interfere and collide with the static cutting edge during rotation, in the hope that the fine filamentous dirt attached to the cleaning brush can be cut into easily sucked-up fragments by contacting the static cutting edge during the interference and collision process.

[0005] However, the cutting force experienced by filamentous contaminants when they come into contact with the static cutting edge is limited, so there is a probability that the filamentous contaminants attached to the brush tip may not be cut off in one go. Moreover, the interference collision between the cleaning brush and the static cutting edge only occurs at the outer brush tip. Therefore, if the filamentous contaminants attached to the brush tip gradually tighten and wrap around the rotating spindle before being cut off, they will not be able to come into contact with the static cutting edge again due to the interference collision between the cleaning brush and the static cutting edge, and may eventually wrap around and wrap around the outer shaft wall of the rotating spindle.

[0006] Therefore, during the cleaning and maintenance of the robot vacuum cleaner, it is necessary to manually remove the fine filamentous dirt entangled on the outer shaft wall of the rotating main shaft, which is not only inefficient and difficult to clean, but also affects the user experience.

[0007] It is evident that how to automatically clean the fine filamentous contaminants entangled and wrapped around the outer shaft wall of the rotating spindle has become a technical problem that needs to be solved in the existing technology. Summary of the Invention

[0008] In embodiments of this application, a roller brush assembly for a sweeping robot is provided, and a sweeping robot is provided that can automatically clean filamentous dirt wrapped around the outer shaft wall of a rotating spindle.

[0009] The roller brush assembly for a robotic vacuum cleaner provided in this application embodiment may include:

[0010] A rotating spindle is equipped with cleaning brushes that radiate from the outer shaft wall. The rotating spindle also has a hollow shaft cavity and a mounting slit that extends from the outer shaft wall into the hollow shaft cavity. The mounting slit extends along the axial direction of the rotating spindle, and the mounting slit is staggered from the cleaning brushes.

[0011] A cutting assembly, the cutting assembly comprising a fixed toothed row member fixedly inserted into the mounting slit and a movable toothed row member movably inserted into the mounting slit, the fixed toothed row member comprising a plurality of fixed teeth protruding beyond the outer shaft wall, and the movable toothed row member comprising a plurality of movable teeth protruding beyond the outer shaft wall;

[0012] A fixed-axis assembly, which is inserted into the hollow shaft cavity;

[0013] A movable component is movably mounted in the hollow shaft cavity along the axial direction, and the movable component is drivingly connected to the fixed shaft assembly and the moving gear assembly;

[0014] During the rotation of the cleaning brush, the cutting assembly, and the moving member relative to the fixed axis assembly driven by the rotating spindle, the transmission connection causes the moving member to reciprocate in the axial direction, and the reciprocating movement drives the moving teeth to perform a cutting motion that reciprocates and misaligns relative to the fixed teeth in the axial direction.

[0015] In some examples, the rotating spindle may optionally include a plurality of guide teeth spaced apart along the axial direction on the outer shaft wall to form a guide channel spanning the mounting slit between every two adjacent guide teeth; the fixed teeth are aligned with the guide teeth in the axial direction; and the reciprocating misalignment of the moving teeth relative to the fixed teeth is greater than the channel width of the guide channel in the axial direction.

[0016] In some examples, the guide comb teeth are optionally distributed at the slit edges on opposite sides of the slit width direction of the mounting slit.

[0017] In some examples, the guide teeth optionally have tooth sidewalls flush with the edge of the slit; the fixed teeth are aligned and abut against the tooth sidewall of the guide teeth at one edge of the slit; the movable teeth slide into contact with the tooth sidewall of the guide teeth at the other edge of the slit.

[0018] In some examples, optionally, the fixed gear rack component includes a fixed gear mounting strip fixed within the mounting slit, and the fixed gear teeth protrude from the outer side of the fixed gear mounting strip near the outer shaft wall outside the outer shaft wall of the rotating spindle; the movable gear rack component includes a movable gear mounting strip movably mounted within the mounting slit, and the movable gear teeth protrude from the outer side of the movable gear mounting strip near the outer shaft wall outside the outer shaft wall of the rotating spindle; the movable gear rack component further includes a movable gear transmission arm extending from the inner side of the movable gear mounting strip near the hollow shaft cavity into the hollow shaft cavity, and the movable gear transmission arm is drively connected to the moving component.

[0019] In some examples, optionally, the fixed tooth rack component further includes a fixed tooth mounting lug extending from the inner side of the fixed tooth mounting strip near the hollow shaft cavity into the hollow shaft cavity, and the fixed tooth mounting strip is fixed in the mounting slit by the fixed tooth mounting lug being fixedly connected to the rotating spindle in the hollow shaft cavity; the movable tooth rack component further includes a movable tooth mounting lug extending from the inner side of the movable tooth mounting strip near the hollow shaft cavity into the hollow shaft cavity, and the movable tooth mounting strip is movably mounted in the mounting slit by the movable tooth mounting lug being movably assembled to the rotating spindle in the axial direction in the hollow shaft cavity.

[0020] In some examples, optionally, the fixed tooth mounting lug has a circular hole, and the movable tooth mounting lug has an elongated hole extending along the axial direction; the rotating spindle also includes a mounting boss located in the hollow shaft cavity, and the mounting boss is used for threaded connection with a mounting stud passing through the circular hole and the elongated hole; wherein, the insertion fit between the mounting stud and the circular hole causes the fixed tooth mounting lug to be fixedly connected to the rotating spindle in the hollow shaft cavity, and the sliding fit between the mounting stud and the elongated hole causes the movable tooth mounting lug to be movably assembled with the rotating spindle in the hollow shaft cavity along the axial direction.

[0021] In some examples, the movable member is optionally fixedly engaged with the rotating spindle in the rotational direction relative to the fixed-axis assembly, thereby constraining the movable member to rotate synchronously with the rotating spindle.

[0022] In some examples, the rotating spindle may optionally include a sliding keyway located within the hollow shaft cavity; the moving member has a radial key inserted into the sliding keyway; the relative positions of the radial key and the sliding keyway are fixed in the rotational direction of the rotating spindle relative to the fixed shaft assembly, and the sliding keyway provides a fitting allowance for sliding of the radial keyway in the axial direction.

[0023] In some examples, the rotating spindle may optionally include an inner cylindrical shell fixed within the hollow shaft cavity, and the sliding keyway is formed on the cylindrical sidewall of the inner cylindrical shell; the moving member includes a transmission slider located within the shell cavity of the inner cylindrical shell, and the radial convex key protrudes from the transmission slider toward the first slider sidewall of the sliding keyway.

[0024] In some examples, the movable gear rack component may optionally include a movable gear transmission arm extending into the hollow shaft cavity; the movable member achieves a transmission connection with the movable gear rack component by fixing the movable gear transmission arm in the axial direction, the fixing constraining the movable gear transmission arm to induce the cutting motion of the movable gear teeth in response to the reciprocating movement of the movable member.

[0025] In some examples, the movable member may optionally have a retaining groove into which the movable gear drive arm is inserted, the relative positions of the retaining groove and the movable gear drive arm being fixed in the axial direction, and the retaining groove having an expansion allowance relative to the movable gear drive arm in a groove width dimension perpendicular to the axial direction.

[0026] In some examples, the rotating spindle may optionally include an inner liner shell fixed within the hollow shaft cavity, and the cavity of the inner liner shell communicates with the mounting slit; the moving member includes a drive slider located within the cavity of the inner liner shell, and the retaining groove is located on a second slider sidewall of the drive slider facing the mounting slit.

[0027] In some examples, the moving member and the fixed-axis assembly are optionally connected by an eccentric contact, and the contact position of the eccentric contact is offset from the rotation axis of the rotating spindle relative to the rotation axis of the fixed-axis assembly.

[0028] In some examples, the moving member may optionally include the tilting turntable, which is tilted relative to the axis of rotation, and the center of the tilting turntable is arranged coaxially with the axis of rotation; the fixed-axis assembly has an eccentric protrusion offset from the axis of rotation, and the eccentric protrusion contacts the edge of the tilting turntable; wherein the tilting turntable generates the reciprocating movement in response to a change in the contact position between the turntable edge and the eccentric protrusion during the rotation.

[0029] In some examples, optionally, the fixed-axis assembly includes a fixed shaft and a cylindrical sleeve, the fixed shaft having an anti-rotation shaft end located outside the hollow shaft cavity and a guide shaft end inserted into the hollow shaft cavity, and the cylindrical sleeve is fixedly mounted on the guide shaft end; the eccentric protrusion includes a shaft end arcuate boss located on the end face of the guide shaft end and a sleeve arcuate protrusion located on the inner wall of the cylindrical sleeve cavity; the tilting turntable is located in the cylindrical sleeve, and during the rotation: a first position region of the turntable edge of the tilting turntable contacts the shaft end arcuate boss to cause the moving member to... A first translational motion occurs in the axial direction away from the fixed axis assembly; the second position region of the turntable edge of the tilting turntable contacts the arcuate protrusion of the sleeve, thereby causing the moving member to undergo a second translational motion in the axial direction closer to the fixed axis assembly; the starting position of the first position region and the ending position of the second position region are both the first edge position of the turntable edge in the axial direction that is furthest from the guide shaft end; the ending position of the first position region and the starting position of the second position region are both the second edge position of the turntable edge in the axial direction that is closest to the guide shaft end.

[0030] In some examples, the movable member and the fixed-axis assembly are optionally connected by a screw-fit, and the screw-fit axis is deflected relative to the axial direction.

[0031] In some examples, optionally, the moving member includes a guide shaft having an inclined annular groove, the central axis of which is inclined relative to the axial direction, and the screwing axis of the screw-fit coincides with the central axis of the inclined annular groove; the fixed axis assembly includes an inner sleeve and guide balls, the inner sleeve having a ball receiving through-hole penetrating the sleeve wall, the guide balls being rotatably received in the ball receiving through-hole and engaging with the spherical surface of the inclined annular groove covered by the inner sleeve; wherein the spherical engagement of the guide balls with the inclined annular groove guides the screwing of the moving member relative to the fixed axis assembly, and the moving member reciprocates in response to a change in the position of the spherical engagement of the guide balls with the inclined annular groove.

[0032] In some examples, the fixed-axis assembly may optionally include an outer sleeve, which is fitted over the outer side of the inner sleeve and covers the guide balls.

[0033] In some examples, the moving member may optionally include a transmission slider for driving connection with the moving gear assembly and fixedly held with the rotating spindle in the rotational direction of the rotating spindle relative to the fixed axis assembly; the transmission slider is located outside the cylindrical sleeve, and the moving member also includes a connecting shaft that penetrates the cylindrical sleeve and connects between the center of the tilting turntable and the transmission slider.

[0034] In some examples, the rotating spindle may optionally include at least two mounting slits arranged at a preset phase interval; the cutting assembly includes at least two sets of fixed toothed members and movable toothed members, each set of fixed toothed members and movable toothed members being inserted into a corresponding mounting slit.

[0035] In some examples, optionally, the rotating spindle includes a first semi-cylindrical shell and a second semi-cylindrical shell, the cylindrical surfaces of the first and second semi-cylindrical shells being complementary, the first and second semi-cylindrical shells being snap-fitted together, a pair of cleaning brushes being fixedly clamped between the first and second semi-cylindrical shells, and the hollow shaft cavity being surrounded by the first and second semi-cylindrical shells; the rotating spindle includes two mounting slits respectively opened in the first and second semi-cylindrical shells, the phase interval between the two mounting slits being 180°, and the two mounting slits being located in the plane of symmetry between the pair of cleaning brushes.

[0036] This application provides an embodiment of a sweeping robot that may include a mobile chassis, an integrated cavity housing supported on the mobile chassis, and a roller brush assembly as described in the foregoing embodiments. The roller brush assembly is installed in the integrated cavity housing, wherein:

[0037] The mobile chassis has a chassis opening, the integrated cavity shell has a hoisting window exposed at the chassis opening, and a suction window for communicating with the dust collection mechanism. The installation position of the roller brush assembly in the integrated cavity shell allows the cleaning brush to extend out of the hoisting window during the rotation to perform a hoisting operation.

[0038] The integrated cavity shell is fixedly equipped with a drive motor. The first shaft end of the rotating spindle is connected to the drive motor for transmission. The fixed shaft assembly is inserted into the hollow shaft cavity of the rotating spindle from the second shaft end opposite to the first shaft end. The fixed shaft assembly is fixed in the integrated cavity shell.

[0039] Based on the above embodiments, the rotating spindle of the roller brush assembly can have a hollow shaft cavity and an installation slit extending from the outer shaft wall into the hollow shaft cavity. A fixed toothed row component and a movable toothed row component are inserted into the installation slit, and a movable component is housed within the hollow shaft cavity. Based on the transmission connection between the movable component and the fixed shaft component inserted into the hollow cavity, the movable component can reciprocate axially during the rotation of the rotating spindle relative to the fixed shaft component. Furthermore, based on the transmission connection between the movable component and the movable toothed row component, the reciprocating movement of the movable toothed row component can induce a cutting motion in which the movable teeth of the movable toothed row component reciprocate and misalign with the fixed teeth of the fixed toothed row component. Therefore, through the reciprocating and misaligning cutting motion of the movable teeth protruding from the outer shaft wall relative to the fixed teeth, the roller brush assembly can autonomously and actively cut (i.e., automatically clean) the filamentous dirt wrapped around the outer shaft wall of the rotating spindle. This helps improve the efficiency of cleaning fine filamentous dirt, reduce the difficulty of cleaning fine filamentous dirt, and thus improve the user experience. Attached Figure Description

[0040] The following figures are for illustrative purposes only and do not limit the scope of this application:

[0041] Figure 1 This is a structural schematic diagram of the roller brush assembly for a sweeping robot in the embodiment of this application, in its disassembled state.

[0042] Figure 2 This is a first-view structural schematic diagram of the roller brush assembly for a sweeping robot in the assembled state according to an embodiment of this application.

[0043] Figure 3 This is a second-view structural schematic diagram of the roller brush assembly for a sweeping robot in the assembled state according to an embodiment of this application.

[0044] Figure 4 This is a cross-sectional view of the roller brush assembly for a sweeping robot in the assembled state in an embodiment of this application.

[0045] Figure 5 This is a partial structural diagram of the rotating spindle of the roller brush assembly for a sweeping robot in an embodiment of this application;

[0046] Figure 6 This is a schematic diagram of the structure of the moving component of the roller brush assembly for a sweeping robot in an embodiment of this application;

[0047] Figure 7 This is a schematic diagram showing the assembly relationship between the moving component and the rotating spindle of the roller brush assembly used in the sweeping robot in an embodiment of this application;

[0048] Figure 8This is a schematic diagram showing the assembly relationship between the moving component and the fixed axis component of the roller brush assembly for a sweeping robot in an embodiment of this application.

[0049] Figure 9 This is a partial assembly structure diagram of the moving component and fixed axis component of the roller brush assembly for a sweeping robot in an embodiment of this application;

[0050] Figure 10 This is a schematic diagram of the structural replacement scheme for the moving component and the fixed axis component of the roller brush assembly of the sweeping robot in the embodiments of this application;

[0051] Figure 11 This is a partial structural diagram of the sweeping robot in the embodiments of this application;

[0052] Figure 12 This is a schematic diagram of the integrated cavity shell of the sweeping robot in the embodiments of this application;

[0053] Figure 13 For example Figure 12 The diagram shows the docking structure between the integrated cavity shell and the dust collection component.

[0054] Explanation of reference numerals in the attached figures

[0055] 10 Rotary Spindle

[0056] 100 hollow shaft cavity

[0057] 11 First Semi-Cylindrical Shell

[0058] 12 Second Semi-cylindrical Shell

[0059] 13 Limiting end caps

[0060] 14 Drive End Cover

[0061] 15 Install slits

[0062] 16 Installation Columns

[0063] 17 Guided Comb Teeth

[0064] 18-lined column shell

[0065] 180° sliding keyway

[0066] 181 Inner Liner Valve

[0067] 182 half-groove notch

[0068] 191 Screw Hole Seat

[0069] 192 screwed boss

[0070] 20 fixed-axis assembly

[0071] 21 Fixed Shaft

[0072] 211 anti-rotation shaft end

[0073] 212 guide shaft end

[0074] 213 Limiting Through Hole

[0075] 219 Avoidance ring groove

[0076] 22-column socket

[0077] 221 semi-cylindrical box

[0078] 222 Semi-cylindrical box lid

[0079] 223 Limiting Hole Column

[0080] 23 Eccentric protrusions

[0081] 231 shaft end arc surface boss

[0082] 232 sets of curved protrusions

[0083] 21' Inner Sleeve

[0084] 22' Guide Ball

[0085] 23' outer sleeve

[0086] 30 moving components

[0087] 31 Transmission Slider

[0088] 311 radial convex key

[0089] 315 Card Holder Groove

[0090] 32 tilting turntable

[0091] 32' guide shaft

[0092] 320 Inclined Annular Groove

[0093] 33 Connecting shaft

[0094] 40 Cleaning Brush

[0095] 50 cutting components

[0096] 51 Fixed Tooth Row Components

[0097] 510 fixed teeth

[0098] 511 Fixed Tooth Mounting Strip

[0099] 512 fixed tooth mounting lug

[0100] 52 moving gear rack components

[0101] 520 movable teeth

[0102] 521 Moving Tooth Mounting Strip

[0103] 522 Moving toothed lug

[0104] 523 moving gear transmission arm

[0105] 53 Mounting Studs

[0106] 60 integrated cavity shell

[0107] 600 roller brush chamber

[0108] 61 hoist windows

[0109] 62 suction windows

[0110] 63 Support Shaft Seat

[0111] 64 drive shaft mount

[0112] 65 stop turning gap

[0113] 66-channel component

[0114] 70 mobile chassis

[0115] 700 chassis opening

[0116] 81 drive motor

[0117] 82 speed reduction mechanism

[0118] 90 fine thread-like dirt Detailed Implementation

[0119] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided with reference to the accompanying drawings and embodiments.

[0120] Figure 1 This is a schematic diagram of the disassembled structure of the roller brush assembly for a sweeping robot in an embodiment of this application. Figure 2 This is a first-view structural schematic diagram of the roller brush assembly for a sweeping robot in the assembled state, as described in the embodiments of this application. Figure 3 This is a second-view structural schematic diagram of the roller brush assembly for a sweeping robot in the assembled state, as described in an embodiment of this application. Figure 4 This is a cross-sectional view of the roller brush assembly for a robotic vacuum cleaner in an assembled state, as described in an embodiment of this application. Please refer to... Figures 1 to 4 In embodiments of this application, the roller brush assembly for a sweeping robot may include a rotating spindle 10, a cutting assembly 50, a fixed-axis assembly 20, and a moving component 30.

[0121] The rotating spindle 10 may be equipped with cleaning brushes 40 extending radially from the outer shaft wall, and the rotating spindle 10 also has a hollow shaft cavity 100 (please pay special attention to this). Figure 4 The mounting slit 15 extends from the outer shaft wall into the hollow shaft cavity 100, wherein the mounting slit 15 extends along the axial direction of the rotating spindle 10, and the mounting slit 15 is offset from the cleaning brush 40.

[0122] In the illustrated representation of the embodiments of this application, the rotating spindle 10 includes a first semi-cylindrical shell 11 and a second semi-cylindrical shell 12 as an example. The cylindrical surfaces of the first semi-cylindrical shell 11 and the second semi-cylindrical shell 12 are complementary, and the first semi-cylindrical shell 11 and the second semi-cylindrical shell 12 are fastened together. For example, the fastening and splicing of the first semi-cylindrical shell 11 and the second semi-cylindrical shell 12 can be fixed by snap-fitting at the edge of the cylindrical surface and / or by screw fastening. The illustrations of this application show that both the first semi-cylindrical shell 11 and the second semi-cylindrical shell 12 have screw holes 191 for screws to pass through and threaded protrusions 192 for screws to be threaded together. The screw holes 191 of the first semi-cylindrical shell 11 can be positioned and connected with the threaded protrusions 192 of the second semi-cylindrical shell 12. Similarly, the screw holes 191 of the second semi-cylindrical shell 12 can also be positioned and connected with the threaded protrusions 192 of the first semi-cylindrical shell 11. Thus, by positioning and connecting the screw holes 191 and threaded protrusions 192 formed at different positions of the first semi-cylindrical shell 11 and the second semi-cylindrical shell 12, and by fixing the screws in each pair of positioned and connected screw holes 191 and threaded protrusions 192, the fastening and splicing of the first semi-cylindrical shell 11 and the second semi-cylindrical shell 12 can be fixed.

[0123] In this case, a pair of seams between the first semi-cylindrical shell 11 and the second semi-cylindrical shell 12 can respectively fix and clamp a pair of cleaning brushes 40. As can be seen from the illustration of the embodiment of this application, the seam between the first semi-cylindrical shell 11 and the second semi-cylindrical shell 12 is not limited to a straight line shape, but can be set to a zigzag shape, so that the elongated cleaning brushes 40 are constrained into a bent shape by the zigzag seam between the first semi-cylindrical shell 11 and the second semi-cylindrical shell 12. Such a bent shape can cause the discrete dirt brushed by the cleaning brushes 40 to converge towards the middle area of ​​the elongated shape during the rotation of the rotating spindle 10.

[0124] For a rotating spindle 10 including a first semi-cylindrical shell 11 and a second semi-cylindrical shell 12, wherein the hollow shaft cavity 100 is surrounded by the first semi-cylindrical shell 11 and the second semi-cylindrical shell 12, that is, the hollow shaft cavity 100 of the rotating spindle 10 may include two semi-cylindrical cavities of the first semi-cylindrical shell 11 and the second semi-cylindrical shell 12 that are interconnected, and the mounting slits 15 of the rotating spindle 10 may include two mounting slits 15 respectively opened in the first semi-cylindrical shell 11 and the second semi-cylindrical shell 12. Preferably, when the first semi-cylindrical body 11 and the second semi-cylindrical body 12 are in an assembled state of interlocking splicing, the phase interval between the two mounting slits 15 is 180°, and the two mounting slits 15 are located in the symmetrical plane between a pair of cleaning brushes 40.

[0125] It is understood that the embodiments of this application do not intend to impose unnecessary limitations on the shaft composition of the rotating spindle 10. That is, the shaft of the rotating spindle 10 is not limited to a physical form in which the first semi-cylindrical shell 11 and the second semi-cylindrical shell 12 are fastened together. Instead, it can adopt any physical form that can support the fixed installation of the cleaning brush 40, has a hollow shaft cavity 100 and an installation slit 15.

[0126] Furthermore, this application embodiment does not intend to limit the number of cleaning brushes 40 and mounting slits 15. That is, if the cleaning brushes 40 are not fixed by the joint between the first semi-cylindrical shell 11 and the second semi-cylindrical shell 12, then the number of cleaning brushes 40 may not be limited to two. Also, only one of the first semi-cylindrical shell 11 and the second semi-cylindrical shell 12 may have a mounting slit 15, or the number of mounting slits 15 opened in the first semi-cylindrical shell 11 and / or the second semi-cylindrical shell 12 may be more than one. Therefore, the number of mounting slits 15 of the rotating spindle 10 may not be limited to two, but may be one or more than two other numbers.

[0127] The cutting assembly 50 includes a fixed toothed component 51 fixedly inserted into the mounting slit 15 and a movable toothed component 52 movably inserted into the mounting slit 15. The fixed toothed component 51 and the movable toothed component 52 can rotate synchronously with the rotating spindle 10. The fixed toothed component 51 and the movable toothed component 52 can be constrained by the slit width dimension of the mounting slit 15 in the rotation direction of the rotating spindle 10 to be stacked close together. The fixed toothed component 51 can include a plurality of fixed teeth 510 protruding beyond the outer shaft wall of the rotating spindle 10 at the mounting slit 15. The movable toothed component 52 can include a plurality of movable teeth 520 protruding beyond the outer shaft wall of the rotating spindle 10 at the mounting slit 15. The tooth gap between the fixed teeth 510 and the tooth gap between the movable teeth 520 can be the same or different as shown in the illustrations of the embodiments of this application.

[0128] In embodiments of this application, the fixed tooth row member 51 may include a fixed tooth mounting strip 511 fixed within the mounting slit 15. For example, the rotating spindle 10 may also include a mounting boss 16 located in the hollow shaft cavity 100. The mounting boss 16 is used for threaded connection to the mounting stud 53 in the hollow shaft cavity 100. The fixed tooth rack component 51 may also include a fixed tooth mounting lug 512 protruding from the inner side of the fixed tooth mounting strip 511 near the hollow shaft cavity 100 into the hollow shaft cavity 100. The fixed tooth mounting lug 512 may have a round hole adapted to the mounting stud 53. The mounting stud 53 may pass through the round hole of the fixed tooth mounting lug 512. The insertion and engagement of the mounting stud 53 and the round hole of the fixed tooth mounting lug 512 fixes the fixed tooth mounting lug 512 to the rotating spindle 10 in the hollow shaft cavity 100. Thus, the fixed tooth mounting strip 511 can be fixed in the mounting slit 15 by the fixed connection of the fixed tooth mounting lug 512 to the rotating spindle 10 in the hollow shaft cavity 100. Additionally, the fixed tooth 510 can protrude from the outer side of the fixed tooth mounting strip 511 near the outer shaft wall of the rotating spindle 10, outside the outer shaft wall of the rotating spindle 10.

[0129] In embodiments of this application, the movable tooth rack member 52 may include a movable tooth mounting strip 521 movably mounted within the mounting slit 15. For example, the movable tooth rack component 52 may also include a movable tooth mounting lug 522 extending from the inner side of the movable tooth mounting strip 521 near the hollow shaft cavity 100 into the hollow shaft cavity 100. The movable tooth mounting lug 522 has an elongated hole extending along the axial direction of the rotating main shaft 10 (i.e., the extension of the mounting slit 15). The aforementioned mounting stud 53 may also pass through the elongated hole of the movable tooth mounting lug 522. Furthermore, the sliding fit between the mounting stud 53 and the elongated hole of the movable tooth mounting lug 522 allows the movable tooth mounting lug 522 to be movably assembled with the rotating main shaft 10 in the axial direction within the hollow shaft cavity 100. Thus, the movable tooth mounting strip 521 can be movably mounted in the mounting slit 15 through the movable assembly of the movable tooth mounting lug 522 with the rotating main shaft 10 in the axial direction within the hollow shaft cavity 100. Additionally, the movable tooth 520 can protrude from the outer side of the outer shaft wall of the rotating spindle 10 near the movable tooth mounting strip 521.

[0130] When both the first semi-cylindrical shell 11 and the second semi-cylindrical shell 12 have an installation slit 15, the cutting assembly 50 may include two sets of fixed toothed members 51 and movable toothed members 52, and each set of fixed toothed members 51 and movable toothed members 52 is inserted into a corresponding installation slit 15. If the phase interval between the two installation slits 15 is 180° and the two installation slits 15 are located in the plane of symmetry between a pair of cleaning brushes 40, then the phase interval between the two sets of fixed toothed members 51 and movable toothed members 52 is 180°, and each set of fixed toothed members 51 and movable toothed members 52 may have a phase interval of approximately 90° with each cleaning brush 40.

[0131] That is, the cutting assembly 50 may include a number of fixed toothed members 51 and movable toothed members 52 equal to the number of mounting slits 15. Since the number of mounting slits 15 of the rotating spindle 10 is not limited to two, the number of sets of fixed toothed members 51 and movable toothed members 52 included in the cutting assembly 50 is also not limited to two sets. Preferably, the rotating spindle 10 includes at least two mounting slits 15 arranged at a preset phase interval (e.g., 180°, or any angle value between 90° and 180°), and the cutting assembly 50 includes at least two sets of fixed toothed members 51 and the movable toothed members 52.

[0132] The fixed-axis assembly 20 is inserted into the hollow shaft cavity 100 of the rotating spindle 10. The insertion and fitting of the fixed-axis assembly 20 into the hollow shaft cavity 100 of the rotating spindle 10 creates an axial limiting constraint between the fixed-axis assembly 20 and the rotating spindle 10. However, there is no constraint between the fixed-axis assembly 20 and the rotating spindle 10 in the rotation direction of the rotating spindle 10.

[0133] Specifically, the rotating spindle 10 may have a first shaft end for transmission connection with a drive motor. For example, the first shaft end of the rotating spindle 10 may be fixedly fitted with a drive end cover 14 for transmission connection with a drive motor, so that the rotating spindle 10 can rotate in response to the power output generated by the drive motor.

[0134] Furthermore, the second shaft end of the rotating spindle 10, opposite to the first shaft end, can be rotatably supported by the fixed shaft assembly 20. That is, the fixed shaft assembly 20 can be inserted into the hollow shaft cavity 100 of the rotating spindle 10 from the second shaft end opposite to the first shaft end. The fixed shaft assembly 20 may have an anti-rotation shaft end 211 located outside the second shaft end of the rotating spindle 10, and by constraining the anti-rotation shaft end 211, the fixed shaft assembly 20 can be prevented from rotating with the rotating spindle 10. In addition, in order to avoid axial displacement between the fixed shaft assembly 20 and the rotating spindle 10, a limiting end cap 13 may be installed on the second shaft end of the rotating spindle 10, and the anti-rotation shaft end 211 of the fixed shaft assembly 20 may pass through the limiting end cap 13 and be located outside the second shaft end of the rotating spindle 10.

[0135] The movable member 30 is movably mounted within the hollow shaft cavity 100 of the rotating spindle 10 along the axial direction of the rotating spindle. The movable member 30 is constrained to rotate synchronously with the rotating spindle 10. For example, the movable member 30 is fixedly held to the rotating spindle 10 in the rotational direction relative to the fixed shaft assembly 20, thereby constraining the movable member 30 to rotate synchronously with the rotating spindle 10. Furthermore, the movable member 30 is drive-connected to the fixed shaft assembly 20 and the movable gear rack member 52.

[0136] For example, the movable component 30 can be drivenly connected to the cavity portion of the fixed-axis assembly 20 located within the hollow shaft cavity 100.

[0137] For example, the movable gear rack component 52 may also include a movable gear transmission arm 523 that extends from the inner side of the movable gear mounting strip 521 near the hollow shaft cavity 100 into the hollow shaft cavity 100, and the movable member 30 can achieve a transmission connection with the movable gear rack component 52 by fixing and holding the movable gear transmission arm 523 in the axial direction of the rotating spindle 10.

[0138] For the rotating spindle 10 including the first semi-cylindrical shell 11 and the second semi-cylindrical shell 12, the fixed axis assembly 20 and the moving component can be pre-assembled with either the first semi-cylindrical shell 11 or the second semi-cylindrical shell 12 in a disassembled state where the first semi-cylindrical shell 11 and the second semi-cylindrical shell 12 are separated from each other, and then the assembly in the hollow shaft cavity 100 of the rotating spindle 10 is completed by snapping together the first semi-cylindrical shell 11 and the second semi-cylindrical shell 12.

[0139] During the rotation of the rotating spindle 10, which drives the cleaning brush 40, the cutting assembly 50, and the moving member 30 relative to the fixed axis assembly 20, the transmission connection between the moving member 30 and the fixed axis assembly 20 and the moving gear assembly 52 can cause the moving member 30 to reciprocate in the axial direction of the rotating spindle 10. This reciprocating movement drives the moving gear 520 to perform a reciprocating cutting motion relative to the fixed gear 510 in the axial direction of the rotating spindle 10. For example, for every revolution of the rotating spindle 10, the moving member 30 can reciprocate once and drive the moving gear 520 to complete one reciprocating misalignment relative to the fixed gear 510.

[0140] Based on the above structure, the rotating spindle 10 of the roller brush assembly provided in this application embodiment may have a hollow shaft cavity 10 and an installation slit 15 extending from the outer shaft wall into the hollow shaft cavity 100. The installation slit 15 houses a fixed tooth row member 51 and a movable tooth row member 52. Furthermore, a movable member 30 is housed within the hollow shaft cavity 100 of the rotating spindle 10. Based on the transmission connection between the movable member 30 and the fixed shaft assembly 20 inserted into the hollow inner cavity 100 of the rotating spindle 10, the movable member 30 can reciprocate along the axial direction of the rotating spindle 10 during rotation of the rotating spindle 10 relative to the fixed shaft assembly 20. Furthermore, based on the transmission connection between the movable member 30 and the movable tooth row member 52, the reciprocating movement of the movable member 30 can induce the movable teeth 520 of the movable tooth row member 52 to perform a reciprocating, misaligned cutting motion relative to the fixed teeth 510 of the fixed tooth row member 51. Therefore, by the reciprocating cutting motion of the moving teeth 520 protruding from the outer shaft wall of the rotating main shaft 10 relative to the fixed teeth 510, the roller brush assembly can autonomously and actively cut (i.e., automatically clean) the filamentous dirt 90 wrapped around the outer shaft wall of the rotating main shaft 10. This helps to improve the cleaning efficiency of the filamentous dirt 90, reduce the difficulty of cleaning the filamentous dirt 90, and thus enhance the user experience.

[0141] Figure 5 This is a partial structural diagram of the rotating spindle of the roller brush assembly for a robotic vacuum cleaner in an embodiment of this application. Please refer to... Figure 5 In embodiments of this application, the rotating spindle 10 may further include a plurality of guide teeth 17 spaced apart along the axial direction on the outer shaft wall to form a guide channel spanning the mounting slit 15 between every two adjacent guide teeth 17. For example, the guide teeth 17 may be spaced apart at the slit edges on opposite sides of the mounting slit 15 in the slit width direction.

[0142] In this case, the fixed teeth 510 and the guide teeth 17 are aligned with each other in the axial direction to avoid the fixed teeth 510 blocking the drainage channel. For example, the guide teeth 17 may have comb sidewalls flush with the edge of the slit, the fixed teeth 510 may be aligned and abut against the comb sidewall of the guide teeth 17 at one edge of the slit, and the movable teeth 520 may slide into contact with the comb sidewall of the guide teeth 17 at the edge of the slit on the other side.

[0143] The reciprocating misalignment of the moving tooth 520 relative to the fixed tooth 510 can be greater than the channel width of the guide channel in the axial direction of the rotating main shaft 10. Preferably, this movement stroke can be greater than the sum of the tooth width of the guide comb 17 in the axial direction of the rotating main shaft 10 and the channel width of the two guide channels.

[0144] Please see Figure 5 Simultaneous review Figure 2 and Figure 3 Based on the guiding channel formed by the guide comb teeth 17, the filamentous dirt 90 can cross the mounting slit 15 in an attitude perpendicular to the mounting slit 15, making it easier for the filamentous dirt 90 to be cut by the moving teeth 520 that perform cutting motion along the mounting slit 15, thereby improving the cutting efficiency of the roller brush assembly in autonomously and actively cutting the filamentous dirt 90 wrapped around the outer shaft wall of the rotating main shaft 10.

[0145] To better understand the driving principle of the cutting motion of the moving tooth 520 by the transmission connection between the moving component 30, the fixed axis assembly 20, and the moving tooth row component 52, the following will be illustrated with examples of the structure.

[0146] Figure 6 This is a schematic diagram of the moving component of the roller brush assembly for a robotic vacuum cleaner, as described in an embodiment of this application. Please refer to... Figure 6 In the embodiments of this application, the moving component 30 may include a transmission slider 31, an inclined turntable 32, and a connecting shaft 33 connecting the transmission slider 31 and the inclined turntable 32.

[0147] The transmission slider 31 is used to achieve synchronous rotational constraints between the moving member 30 and the rotating spindle 10, and to achieve transmission connection between the moving member 30 and the moving gear rack member 52. For example, the transmission slider 31 may have a radial protrusion key 311 for achieving synchronous rotational constraints between the moving member 30 and the rotating spindle 10, and a retaining groove 315 for achieving transmission connection between the moving member 30 and the moving gear rack member 52.

[0148] The tilting turntable 32 is used to realize the transmission cooperation between the moving component 30 and the fixed axis assembly 20.

[0149] Figure 7 This is a schematic diagram illustrating the assembly relationship between the moving component and the rotating spindle of the roller brush assembly used in a robotic vacuum cleaner according to an embodiment of this application. Please refer to... Figure 7 And watch back at the same time Figure 1 and Figure 6 In the embodiments of this application, the rotating spindle 10 may further include a sliding keyway 180 located in the hollow shaft cavity 100. The radial protrusion key 311 of the moving member 30 may be inserted into the sliding keyway 180 of the rotating spindle 10. The relative positions of the radial protrusion key 311 and the sliding keyway 180 in the rotational direction of the rotating spindle 10 relative to the fixed shaft assembly 20 are fixed. Furthermore, the sliding keyway 180 provides a fitting allowance for the sliding of the radial protrusion key 311 in the axial direction of the rotating spindle 10.

[0150] Thus, through the slidable insertion of the radial convex key 311 into the sliding keyway 180, the moving member 30 is fixedly held with the rotating spindle 10 in the rotational direction relative to the fixed axis assembly 20, thereby constraining the moving member 30 to rotate synchronously with the rotating spindle 10.

[0151] Specifically, the rotating spindle 10 may further include an inner cylindrical shell 18 fixed within the hollow shaft cavity 100, and a sliding keyway 180 may be formed on the cylindrical sidewall of the inner cylindrical shell 18. In this case, the transmission slider 31 of the moving member 30 may be located within the shell cavity of the inner cylindrical shell 18, and a radial protrusion 311 may protrude from the transmission slider 31 toward the first slider sidewall of the sliding keyway 180.

[0152] For the rotating spindle 10 including the first semi-cylindrical shell 11 and the second semi-cylindrical shell 12, both the first semi-cylindrical shell 11 and the second semi-cylindrical shell 12 can include inner lining shell flaps 181 with semi-groove notches 182. When the first semi-cylindrical shell 11 and the second semi-cylindrical shell 12 are in a snap-fit ​​assembly state, the inner lining shell flaps 181 of the first semi-cylindrical shell 11 and the second semi-cylindrical shell 12 can be snap-fitted to form the aforementioned inner lining shell 18. Furthermore, the semi-groove notches 182 can be connected to form the aforementioned sliding keyway 180.

[0153] As mentioned earlier, the movable gear rack component 52 may also include a movable gear transmission arm 523 that extends into the hollow shaft cavity 100. In this case, please refer back to... Figure 1 , Figure 4 and Figure 6 The moving gear transmission arm 523 of the moving gear rack component 52 can be inserted into the holding groove 315 of the moving component 30.

[0154] The relative positions of the retaining groove 315 and the moving gear transmission arm 523 in the axial direction of the rotating spindle 10 are fixed so that the moving member 30 can achieve a transmission connection with the moving gear row member 52 by fixing the moving gear transmission arm 523 in the axial direction of the rotating spindle 10. The fixed clamping can constrain the moving gear transmission arm 523 to: trigger the cutting motion of the moving gear teeth 520 in response to the reciprocating movement of the moving member 30.

[0155] Furthermore, the groove width of the retaining groove 315 in the axial direction perpendicular to the rotating spindle 10 has an expansion allowance relative to the moving gear transmission arm 523, so as to prevent the moving gear transmission arm 523 from falling off the retaining groove 315 in the axial direction perpendicular to the rotating spindle 10.

[0156] If the rotating spindle 10 has an inner cylindrical shell 18 as described above, and the transmission slider 31 of the moving member 30 is located in the inner cylindrical shell 18, then the cavity of the inner cylindrical shell 18 communicates with the mounting slit 15, and the retaining groove (315) is located on the second slider sidewall of the transmission slider 31 facing the mounting slit 15. In the illustrated representation of the embodiments of this application, the transmission slider 31 is taken as a rectangular block. In this case, the first slider sidewall described above and the second slider sidewall described here can be two sets of mutually perpendicular wall surfaces of the rectangular block.

[0157] Figure 8 This is a schematic diagram showing the assembly relationship between the moving component and the fixed axis component of the roller brush assembly used in the sweeping robot in the embodiments of this application. Figure 9 This is a partial assembly diagram of the moving component and fixed axis component of the roller brush assembly for a sweeping robot in an embodiment of this application. Please refer to... Figure 1 and Figure 4 At the same time pay attention Figure 8 and Figure 9 In the embodiments of this application, the moving member 30 and the fixed axis assembly 20 can be connected by eccentric contact, and the contact position of the eccentric contact is offset from the rotation axis of the rotating spindle 10 relative to the rotation axis of the fixed axis assembly 20.

[0158] Specifically, the tilting turntable 32 of the moving member 30 is tilted relative to the rotation axis of the rotating main shaft 10, and the center of the tilting turntable 32 is coaxially arranged with the rotation axis of the rotating main shaft 10. That is, the axis of the connecting shaft 33 of the moving member 30 can coincide with the rotation axis of the rotating main shaft 10, the center of the tilting turntable 32 can be coaxially arranged with the axis of the connecting shaft 33, and the tilting turntable 32 can be tilted relative to the axis of the connecting shaft 33.

[0159] In this case, the fixed-axis assembly 20 may have an eccentric protrusion 23 that is offset from the axis of rotation, and the eccentric protrusion 23 contacts the edge of the tilting turntable 32.

[0160] Thus, the tilting turntable 32 can reciprocate in response to the change in the contact position between the turntable edge and the eccentric protrusion 23 during the rotation of the rotating spindle 10 relative to the fixed axis assembly 20, thereby causing the moving member 30 including the tilting turntable 32 to reciprocate in order to induce the moving teeth 520 to perform a cutting motion.

[0161] In an embodiment of this application, as a preferred embodiment, the fixed axis assembly 20 may include a fixed shaft 21 and a cylindrical sleeve 22.

[0162] The fixed shaft 21 has an anti-rotation shaft end 211 located outside the hollow shaft cavity 100 as described above, and the fixed shaft 21 also has a guide shaft end 212 inserted into the hollow shaft cavity 100. In addition, the cavity shaft section of the fixed shaft 21 located within the hollow shaft cavity 100 between the anti-rotation shaft end 211 and the guide shaft end 212 may also have a clearance annular groove 219 for avoiding screw hole seats 191 and threaded protrusions 192.

[0163] The cylindrical sleeve 22 is fixedly mounted on the guide shaft end 212 of the fixed shaft body 21. The fixed mounting of the cylindrical sleeve 22 on the guide shaft end 212 means that the relative positions of the cylindrical sleeve 22 and the guide shaft end 212 are fixed in both the axial and rotational directions. For example, the cylindrical sleeve 22 may include a semi-cylindrical box body 221 and a semi-cylindrical box cover 222. The semi-cylindrical box body 221 and the semi-cylindrical box cover 222 can be connected by snap-fit ​​to enclose the guide shaft end 212 of the fixed shaft body 21. The guide shaft end 212 of the fixed shaft body 21 may have a limiting through hole 213, and the cylindrical sleeve 22 has at least one limiting post 223 deployed in the semi-cylindrical box body 221. Therefore, through a connecting piece (e.g., a pin or stud) passing through the limiting through hole 213 and the limiting post 223, the relative positions of the cylindrical sleeve 22 and the guide shaft end 212 in both the axial and rotational directions can be fixed.

[0164] In this case, the eccentric protrusion 23 of the fixed-axis assembly 20 may include an end-face arcuate protrusion 231 located on the end face of the guide shaft end 212 of the fixed shaft body 21, and a sleeve arcuate protrusion 232 located on the inner wall of the cavity of the cylindrical sleeve 22 (e.g., a semi-cylindrical sleeve 221). Furthermore, the tilting turntable 32 of the moving member 30 is located within the cylindrical sleeve 22. For example, the tilting turntable 32 can be placed into the semi-cylindrical sleeve 221 when the semi-cylindrical sleeve 221 and the semi-cylindrical sleeve cover 222 are separated, and then the tilting turntable 32 is enclosed within the cylindrical sleeve 22 by the snap-fit ​​engagement of the semi-cylindrical sleeve 221 and the semi-cylindrical sleeve cover 222. Additionally, the transmission slider 31 of the moving member 30 is located outside the cylindrical sleeve 22, and the connecting shaft 33 of the moving member 30 penetrates the cylindrical sleeve 22.

[0165] Based on the above structure, during the rotation of the cleaning brush 40, the cutting assembly 50, and the moving member 30 relative to the fixed axis assembly 20 driven by the rotating spindle 10:

[0166] The first position area of ​​the turntable edge of the tilting turntable 32 contacts the arc-shaped boss 231 at the shaft end, which can cause the moving member 30 to undergo a first translational motion away from the fixed axis assembly 20 in the axial direction of the rotating spindle 10.

[0167] The second position area of ​​the turntable edge of the tilting turntable 32 contacts the arcuate protrusion 232 of the sleeve, which can cause the moving member 30 to undergo a second translational motion in the axial direction of the rotating spindle 10, which is close to the fixed axis assembly 20. That is, the second translational motion is opposite to the first translational motion.

[0168] like Figure 6 As shown, the starting position of the first position region and the ending position of the second position region can both be the first edge position Pa of the tilting turntable 32 in the axial direction of the rotating main shaft 10, which is furthest from the guide shaft end 212 (i.e., closest to the transmission slider 31 in the axial direction of the connecting shaft 33); and the ending position of the first position region and the starting position of the second position region can both be the second edge position Pb of the tilting turntable 32 in the axial direction of the rotating main shaft 10, which is closest to the guide shaft end 212 (i.e., furthest from the transmission slider 31 in the axial direction of the connecting shaft 33).

[0169] Figure 10 This is a structural schematic diagram of an alternative scheme for the moving component and fixed axis component of the roller brush assembly in an embodiment of this application for a robotic vacuum cleaner. Please refer to... Figure 10 In the embodiments of this application, the moving member 30 and the fixed axis assembly 20 can also be connected by screwing, and the screwing axis of the screwing is deflected relative to the axial direction of the rotating spindle 10.

[0170] Specifically, the moving member 30 may include a guide shaft 32', which may replace the tilting turntable 32 and connecting shaft 33 described above, and connect to the transmission slider 31 described above. The guide shaft 32' may have an inclined annular groove 320, the central axis of which is inclined relative to the axial direction of the rotating main shaft 10, and the screwing axis of the screwing engagement between the moving member 30 and the fixed shaft assembly 20 may coincide with the central axis of the inclined annular groove 320.

[0171] Furthermore, the fixed-axis assembly 20 may include an inner sleeve 21' and guide balls 22'. The inner sleeve 21' can be connected to the second shaft end of the rotating spindle 10 via a shaft not shown in the figures and is subject to anti-rotation constraint at the second shaft end, so that the inner sleeve 21' can remain stationary or anti-rotation during the rotation of the rotating spindle 10. The inner sleeve 21' has a ball receiving through hole 210 that penetrates the cylinder wall. The guide balls 22' are rotatably accommodated in the ball receiving through hole 210 and spherically engage with the inclined annular groove 320 covered by the inner sleeve 21'.

[0172] Based on the above structure, the spherical engagement between the guide ball 22' and the inclined annular groove 320 is used to guide the rotation of the moving member 30 relative to the fixed axis assembly 20, and the moving member 30 can reciprocate in response to the change in the position of the spherical engagement between the guide ball 22' and the inclined annular groove 320.

[0173] Additionally, the fixed-axis assembly 20 may also include an outer sleeve 23', which may be fitted over the outer side of the inner sleeve 21' and cover the guide ball 22' to prevent the guide ball 22' from falling out of the inclined annular groove 320 and the ball receiving through hole 210.

[0174] The above is a detailed description of the roller brush assembly in the embodiments of this application. In another embodiment of this application, a sweeping robot using the roller brush assembly is also provided.

[0175] Figure 11 This is a partial structural diagram of the sweeping robot in the embodiments of this application. Figure 12 This is a schematic diagram of the integrated cavity shell of the robotic vacuum cleaner according to an embodiment of this application. Please refer to... Figure 11 and Figure 12 The sweeping robot in this application embodiment may include a mobile chassis 70 (only the chassis panel of the mobile chassis 70 is shown as an example in the figure), an integrated cavity shell 60 carried on the mobile chassis 70, and the roller brush assembly described in the foregoing embodiment.

[0176] The mobile chassis 70 has a chassis opening 700, the integrated cavity housing 60 has a hoisting window 61 exposed at the chassis opening 700, the roller brush assembly is installed in the integrated cavity housing 60, and the installation position of the roller brush assembly in the integrated cavity housing 60 is such that the cleaning brush 40 extends out of the hoisting window 61 to perform a hoisting operation during the rotation of the rotating spindle 10 relative to the fixed axis assembly 20.

[0177] The integrated cavity housing 60 is also fixedly equipped with a drive motor 81. The first shaft end of the rotating spindle 10 can be connected to the drive motor 81 for transmission (for example, through a reduction mechanism 82). The fixed shaft assembly 20, which is inserted into the hollow shaft cavity 100 of the rotating spindle 10 from the second shaft end opposite to the first shaft end, can be fixed in the integrated cavity housing 60.

[0178] For example, the integrated housing 60 may have a brush cavity 600 for accommodating the brush assembly, with a hoisting window 62 communicating with the brush cavity 600. The opposing side walls of the brush cavity 600 respectively have a support bearing 63 and a power bearing 64, wherein:

[0179] The first shaft end of the rotating spindle 10 (e.g., drive end cover 14) can be mounted on the power shaft seat 64. The input shaft of the reduction mechanism 82 is connected to the drive motor 81. The output shaft of the reduction mechanism 82 is located in the power shaft seat 64. Furthermore, the first shaft end of the rotating spindle 10 (e.g., drive end cover 14) can be coaxially connected to the output shaft of the reduction mechanism 82 in the power shaft seat 64.

[0180] The second shaft end of the rotating spindle 10 (e.g., the limiting end cap 13) can be mounted on the support shaft seat 63, which has an anti-rotation notch 65, and the anti-rotation shaft end 211 of the fixed shaft assembly 20 can be locked at the support shaft seat 63 by the anti-rotation notch 65.

[0181] Figure 13 For example Figure 12 This is a schematic diagram of the docking structure between the integrated cavity shell and the dust collection component. Please refer to [link / reference needed]. Figure 13 And watch back at the same time Figure 12 In embodiments of this application, the integrated cavity shell 60 may also have a suction window 62 for communicating with the dust collection mechanism. For example, the suction window 62 may communicate with the roller brush cavity 600, and the suction window 62 may be equipped with a channel assembly 66 for docking with the dust collection component.

[0182] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A roller brush assembly for a robotic vacuum cleaner, characterized in that, include: A rotating spindle (10) having a hollow shaft cavity (100) and a mounting slit (15) extending from the outer shaft wall into the hollow shaft cavity (100), and the mounting slit (15) extending along the axial direction of the rotating spindle (10); The cutting assembly (50) includes a fixed toothed member (51) fixedly inserted into the mounting slit (15) and a movable toothed member (52) movably inserted into the mounting slit (15). The fixed toothed member (51) includes a plurality of fixed teeth (510) protruding outside the outer shaft wall, and the movable toothed member (52) includes a plurality of movable teeth (520) protruding outside the outer shaft wall. A fixed-axis assembly (20) is inserted into the hollow shaft cavity (100); A movable component (30) is movably mounted in the hollow shaft cavity (100) along the axial direction, and the movable component (30) is connected to the fixed shaft assembly (20) and the moving gear assembly (52) in a transmission connection. The fixed-axis assembly (20) includes an eccentric protrusion (23), which includes a shaft-end arcuate boss (231) and a sleeve arcuate protrusion (232). The moving member (30) includes a tilting turntable (32). During the rotation of the cutting assembly (50) and the moving member (30) relative to the fixed-axis assembly (20) by the rotating spindle (10): a first position region of the turntable edge of the tilting turntable (32) contacts the shaft-end arcuate boss (231) to cause the moving member (30) to... The first translational motion occurs in the axial direction away from the fixed axis assembly (20), and the second position area of ​​the turntable edge contacts the arcuate protrusion (232) of the sleeve to cause the moving member (30) to undergo a second translational motion in the axial direction closer to the fixed axis assembly (20), so that the transmission connection causes the moving member (30) to reciprocate in the axial direction, and the reciprocating motion drives the moving tooth (520) to perform a cutting motion that reciprocates and misaligns relative to the fixed tooth (510) in the axial direction.

2. The roller brush assembly according to claim 1, characterized in that, The rotating spindle (10) also includes a plurality of guide comb teeth (17) spaced apart along the axial direction on the outer shaft wall to form a dredging channel across the mounting slit (15) between every two adjacent guide comb teeth (17). The fixed teeth (510) and the guide comb teeth (17) are aligned with each other in the axial direction; The reciprocating misalignment of the movable tooth (520) relative to the fixed tooth (510) is greater than the channel width of the dredging channel in the axial direction.

3. The roller brush assembly according to claim 2, characterized in that, The guide comb teeth (17) are spaced apart at the slit edges on opposite sides of the slit width direction of the mounting slit (15).

4. The roller brush assembly according to claim 3, characterized in that, The guide comb teeth (17) have comb tooth sidewalls flush with the edge of the slit; The fixed tooth (510) is aligned and abuts against the sidewall of the guide comb tooth (17) at the edge of one side slit, and the movable tooth (520) slides into contact with the sidewall of the guide comb tooth (17) at the edge of the other side slit.

5. The roller brush assembly according to claim 1, characterized in that, The fixed tooth assembly (51) includes a fixed tooth mounting strip (511) fixed in the mounting slit (15), and the fixed tooth teeth (510) protrude from the outer side of the fixed tooth mounting strip (511) near the outer shaft wall outside the outer shaft wall of the rotating spindle (10). The movable tooth assembly (52) includes a movable tooth mounting strip (521) movably mounted in the mounting slit (15), and the movable tooth teeth (520) protrude from the outer side of the movable tooth mounting strip (521) near the outer shaft wall outside the outer shaft wall of the rotating spindle (10). The movable gear assembly (52) further includes a movable gear transmission arm (523) extending from the inner side of the movable gear mounting strip (521) near the hollow shaft cavity (100) into the hollow shaft cavity (100), and the movable gear transmission arm (523) is connected to the movable component (30) in a transmission connection.

6. The roller brush assembly according to claim 5, characterized in that, The fixed tooth assembly (51) further includes a fixed tooth mounting lug (512) extending from the inner side of the fixed tooth mounting strip (511) near the hollow shaft cavity (100) into the hollow shaft cavity (100), and the fixed tooth mounting strip (511) is fixed in the mounting slit (15) by the fixed tooth mounting lug (512) being fixedly connected to the rotating spindle (10) in the hollow shaft cavity (100); The movable tooth rack component (52) further includes a movable tooth mounting lug (522) extending from the inner side of the movable tooth mounting strip (521) near the hollow shaft cavity (100) into the hollow shaft cavity (100). The movable tooth mounting strip (521) is movably mounted in the mounting slit (15) by means of the movable tooth mounting lug (522) being movably assembled with the rotating spindle (10) in the hollow shaft cavity (100) along the axial direction.

7. The roller brush assembly according to claim 6, characterized in that, The fixed tooth mounting lug (512) has a round hole, and the movable tooth mounting lug (522) has an elongated hole extending along the axial direction. The rotating spindle (10) also includes a mounting boss (16) located in the hollow shaft cavity (100), and the mounting boss (16) is used to be threadedly connected to the mounting stud (53) passing through the round hole and the elongated hole; The mounting stud (53) and the circular hole are inserted into each other, so that the fixed tooth mounting lug (512) is fixedly connected to the rotating spindle (10) in the hollow shaft cavity (100). The mounting stud (53) and the elongated hole are slidably fitted, so that the movable tooth mounting lug (522) is movably assembled with the rotating spindle (10) in the axial direction in the hollow shaft cavity (100).

8. The roller brush assembly according to claim 1, characterized in that, The movable member (30) is fixedly held with the rotating spindle (10) in the rotational direction relative to the fixed axis assembly (20) to constrain the movable member (30) to rotate synchronously with the rotating spindle (10).

9. The roller brush assembly according to claim 8, characterized in that, The rotating spindle (10) also includes a sliding keyway (180) located in the hollow shaft cavity (100). The movable member (30) has a radial protruding key (311) that is inserted into the sliding keyway (180). The radial key (311) and the sliding keyway (180) are fixed in relative position in the rotational direction of the rotating spindle (10) relative to the fixed axis assembly (20), and the sliding keyway (180) provides a fitting allowance for the sliding of the radial key (311) in the axial direction.

10. The roller brush assembly according to claim 9, characterized in that, The rotating spindle (10) also includes an inner liner shell (18) fixed in the hollow shaft cavity (100), and the sliding keyway (180) is formed on the cylindrical side wall of the inner liner shell (18). The moving member (30) includes a drive slider (31) located in the cavity of the inner liner shell (18), and the radial key (311) protrudes from the drive slider (31) toward the first slider sidewall of the sliding keyway (180).

11. The roller brush assembly according to claim 1, characterized in that, The movable gear rack component (52) also includes a movable gear transmission arm (523) that extends into the hollow shaft cavity (100). The moving member (30) achieves a transmission connection with the moving gear drive arm (523) by fixing the moving gear drive arm (523) in the axial direction, and the fixing constrains the moving gear drive arm (523) to induce the cutting motion of the moving gear teeth (520) in response to the reciprocating movement of the moving member (30).

12. The roller brush assembly according to claim 11, characterized in that, The movable member (30) has a retaining groove (315) into which the movable gear transmission arm (523) is inserted. The relative positions of the retaining groove (315) and the movable gear transmission arm (523) in the axial direction are fixed. Furthermore, the groove width dimension of the retaining groove (315) in the axial direction has an expansion allowance relative to the movable gear transmission arm (523).

13. The roller brush assembly according to claim 12, characterized in that, The rotating spindle (10) also includes an inner liner shell (18) fixed in the hollow shaft cavity (100), and the shell cavity of the inner liner shell (18) communicates with the mounting slit (15); The movable component (30) includes a drive slider (31) located within the cavity of the inner liner shell (18), and the retaining groove (315) is located on the second slider sidewall of the drive slider (31) facing the mounting slit (15).

14. The roller brush assembly according to claim 1, characterized in that, The rotating spindle (10) is equipped with a cleaning brush (40) that extends radially from the outer shaft wall, and the mounting slit (15) is misaligned with the cleaning brush (40). And / or, The rotating spindle (10) includes at least two mounting slits (15) arranged at a preset phase interval, and the cutting assembly (50) includes at least two sets of fixed toothed members (51) and movable toothed members (52), and each set of fixed toothed members (51) and movable toothed members (52) is inserted into a corresponding mounting slit (15).

15. The roller brush assembly according to claim 1, characterized in that, The center of the tilting turntable (32) is arranged coaxially with the rotational spindle (10) relative to the rotational axis of the fixed axis assembly (20), and the tilting turntable (32) is tilted relative to the rotational axis. The eccentric protrusion (23) of the turntable edge that contacts the tilting turntable (32) is offset from the axis of rotation, such that the tilting turntable (32) produces the reciprocating movement in response to the change in the contact position between the turntable edge and the eccentric protrusion (23) during the rotation.

16. The roller brush assembly according to claim 1, characterized in that, The fixed-axis assembly (20) further includes a fixed shaft body (21) and a cylindrical sleeve (22). The fixed shaft body (21) has an anti-rotation shaft end (211) located outside the hollow shaft cavity (100) and a guide shaft end (212) inserted into the hollow shaft cavity (100). The cylindrical sleeve (22) is fixedly mounted on the guide shaft end (212). The shaft end arc surface boss (231) is located on the end face of the guide shaft end (212), and the sleeve arc surface protrusion (232) is located on the inner wall of the cavity of the cylindrical sleeve (22). The tilting turntable (32) is located in the cylindrical sleeve (22). The starting position of the first position region and the ending position of the second position region are both the first edge position of the turntable edge that is furthest from the guide shaft end (212) in the axial direction; and the ending position of the first position region and the starting position of the second position region are both the second edge position of the turntable edge that is closest to the guide shaft end (212) in the axial direction.

17. The roller brush assembly according to claim 16, characterized in that, The moving component (30) further includes a transmission slider (31) for transmission connection with the moving gear assembly (52) and fixedly held with the rotating main shaft (10) in the rotational direction of the rotating main shaft (10) relative to the fixed shaft assembly (20). The transmission slider (31) is located outside the cylindrical sleeve (22). The moving component (30) also includes a connecting shaft (33), which penetrates the cylindrical sleeve (22) and connects the center of the tilting turntable (32) and the transmission slider (31).

18. The roller brush assembly according to claim 14, characterized in that, The rotating spindle (10) includes a first semi-cylindrical shell (11) and a second semi-cylindrical shell (12). The cylindrical surfaces of the first semi-cylindrical shell (11) and the second semi-cylindrical shell (12) are complementary. The first semi-cylindrical shell (11) and the second semi-cylindrical shell (12) are snapped together. A pair of cleaning brushes (40) are fixedly clamped between the first semi-cylindrical shell (11) and the second semi-cylindrical shell (12). The hollow shaft cavity (100) is surrounded by the first semi-cylindrical shell (11) and the second semi-cylindrical shell (12). The rotating spindle (10) includes two mounting slits (15) respectively opened in the first semi-cylindrical shell (11) and the second semi-cylindrical shell (12), the phase interval between the two mounting slits (15) is 180°, and the two mounting slits (15) are located in the plane of symmetry between a pair of cleaning brushes (40).

19. A robotic vacuum cleaner, characterized in that, The system includes a mobile chassis (70), an integrated cavity housing (60) supported on the mobile chassis (70), and a roller brush assembly as described in any one of claims 1 to 18, the roller brush assembly being disposed in the integrated cavity housing (60), wherein: The mobile chassis (70) has a chassis opening (700), the integrated cavity shell (60) has a hoisting window (61) exposed at the chassis opening (700) and a suction window (62) for communicating with a dust collection mechanism, the rotating spindle (10) is equipped with a cleaning brush (40) extending radially from the outer shaft wall, the mounting slit (15) is staggered with the cleaning brush (40), and the mounting position of the roller brush assembly in the integrated cavity shell (60) allows the cleaning brush (40) to extend outside the hoisting window (61) during the rotation of the rotating spindle (10) to perform a hoisting operation; The integrated cavity shell (60) is fixedly equipped with a drive motor (81). The first shaft end of the rotating spindle (10) is connected to the drive motor (81) for transmission. The fixed shaft assembly (20) is inserted into the hollow shaft cavity (100) of the rotating spindle (10) from the second shaft end opposite to the first shaft end. The fixed shaft assembly (20) is fixed in the integrated cavity shell (60).

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