Sweeping brush movable structure and ground sweeping equipment

Abstract

The utility model provides a sweeping brush moving structure and ground sweeping equipment. The sweeping brush moving structure comprises a first driving assembly, a second driving assembly, a swing arm assembly, a sweeping brush assembly, a bearing assembly and a locking assembly. The cleaning brush assembly is rotatably arranged at one end of the swing arm assembly, and the other end of the swing arm assembly can rotate relative to the bearing assembly. The first driving assembly is in driving connection with the cleaning brush assembly; the second driving assembly drives the swing arm assembly to swing through the locking assembly. The locking assembly has a locking state and an unlocking state, and in the locking state, the locking assembly locks the swing arm assembly so as to prevent the swing arm assembly from rotating; in the unlocking state, the swing arm assembly can rotate. According to the cleaning brush assembly, efficient stretching and storage of the cleaning brush assembly are achieved, the cleaning effect on dead angle positions is guaranteed, locking of the cleaning brush assembly is achieved, and the cleaning brush assembly in the storage state and / or the stretching state is not prone to being moved by external force.

Description

TECHNICAL FIELD

[0001] The utility model relates to ground cleaning equipment technical field, specifically, relates to a kind of brush movable structure and ground cleaning equipment. BACKGROUND

[0002] As a new household appliance, the function of the robot vacuum cleaner is constantly improved, and it has multiple cleaning functions, such as dust collection, cleaning, mopping, etc.

[0003] At present, the existing robot vacuum cleaner usually drives the brush to extend relative to the bottom of the robot when cleaning the corner and other structural dead angle positions, so that the brush can enter the dead angle position for cleaning, to ensure the cleaning effect of the dead angle position. However, the brush of the existing robot vacuum cleaner is usually stored in the bottom of the robot when it is not needed to clean the dead angle, and the overall lacks a structure to lock the extension of the brush, so that the brush in the storage state is easily taken out by the obstacles on the ground, causing the brush to abnormally extend when it is not needed to clean the dead angle, and further possibly colliding with the objects on the ground, not only interfering with the normal movement of the robot vacuum cleaner, but also possibly causing damage to the brush structure, seriously reducing the cleaning effect and service life of the robot vacuum cleaner.

[0004] At the same time, the brush in the robot vacuum cleaner is divided into several types, one of which is used as an edge brush to clean the edge of the cleaning path of the robot vacuum cleaner, so as to sweep the foreign matter on the edge of the cleaning path to the dust suction port at the bottom of the robot, realizing efficient cleaning of the edge. When the robot vacuum cleaner sprays water to clean the floor (e.g. washing mode), at least part of the edge brush may be required to leave the ground, otherwise the ground may be contaminated if the edge brush is in contact with the ground. However, the existing brush structure that can be used as an edge brush usually needs to set an additional lifting structure for driving the brush to lift outside the rotating structure for driving the brush to rotate, in order to realize the separation of the brush and the ground, thus making the entire brush structure more complex, which is not conducive to installation, maintenance and replacement. SUMMARY

[0005] The utility model provides a kind of brush movable structure and ground cleaning equipment to at least solve the problem that the brush of the robot vacuum cleaner in the prior art lacks locking structure, so that the brush in the storage state is easily taken out by the obstacles on the ground, causing the brush to abnormally extend.

[0006] In order to solve the above problems, according to one aspect of the utility model, provide a kind of brush movable structure, comprising: first drive assembly, second drive assembly, swing arm assembly, cleaning brush assembly, bearing assembly and locking assembly;Cleaning brush assembly rotatably is arranged at one end of swing arm assembly, and the other end of swing arm assembly can be rotated relative to bearing assembly;First drive assembly is drivenly connected with cleaning brush assembly, to drive cleaning brush assembly rotation;Wherein, second drive assembly is installed in bearing assembly, and second drive assembly drives swing arm assembly swing by locking assembly, to drive cleaning brush assembly close or away from bearing assembly;Locking assembly has locking state and unlocking state, in locking state, locking assembly locks swing arm assembly, to prevent swing arm assembly rotation;In unlocking state, swing arm assembly can be rotated.

[0007] Further, the position closest to bearing assembly with cleaning brush assembly is first position, the position farthest from bearing assembly with cleaning brush assembly is second position, the rotation direction when swing arm assembly drives cleaning brush assembly from first position to second position is first direction;Wherein, when cleaning brush assembly is located in first position, locking assembly is in locking state, to prevent swing arm assembly rotates along first direction under external force.

[0008] Further, locking assembly includes first pressing wheel and second pressing wheel, pressing block and elastic piece;Second drive assembly and first pressing wheel are drivingly connected, and one end of first pressing wheel and one end of second pressing wheel are driven by friction force;The other end of pressing block and first pressing wheel are matched by slope, to make that pressing block is movable in the axial direction of first pressing wheel when first pressing wheel rotates, and the other end of pressing block and elastic piece abut;Elastic piece is used to provide the elastic force along the axial direction of first pressing wheel;Wherein, when cleaning brush assembly moves to first position, the distance between pressing block and first pressing wheel is maximum, and the elastic force of elastic piece is maximum, to make that locking assembly is in locking state;When cleaning brush assembly moves to second position, the distance between pressing block and first pressing wheel is minimum, and the elastic force is minimum, to make that locking assembly is in unlocking state.

[0009] Furthermore, the first pressing wheel has a first tooth arranged around its circumference, and one end of the second pressing wheel has a first wave-shaped surface that undulates axially; the second pressing wheel has a second tooth arranged around its circumference, and one end of the second pressing wheel facing the first pressing wheel has a second wave-shaped surface that undulates axially; the first tooth meshes with the second driving assembly, the first wave-shaped surface engages with the second wave-shaped surface, and the second tooth meshes with the swing arm assembly; wherein, the second driving assembly drives the first pressing wheel to rotate through the first tooth, the first pressing wheel drives the second pressing wheel to rotate through the friction between the first and second wave-shaped surfaces, and the second pressing wheel drives the swing arm assembly to rotate through the second tooth; when an external force prevents the swing arm assembly from rotating and the driving force of the first pressing wheel on the second pressing wheel is greater than the maximum friction between the first and second wave-shaped surfaces, the second pressing wheel is stationary, and the first and second wave-shaped surfaces slide relative to each other, so that the first pressing wheel and the second driving assembly can rotate.

[0010] Furthermore, the other end of the first pressing wheel in the axial direction has a first climbing surface; one end of the pressing block in the axial direction faces the first pressing wheel and has a second climbing surface, and the other end abuts against the elastic element; the first climbing surface is inclined along the axial direction of the first pressing wheel, the second climbing surface is inclined along the axial direction of the pressing block, and the axial direction of the first pressing wheel is parallel to the axial direction of the pressing block; the first climbing surface and the second climbing surface are in sliding fit; wherein, when the swing arm assembly rotates in the opposite direction to the first direction, the pressing block moves away from the first pressing wheel along the axial direction of the first pressing wheel, the pressing block compresses the elastic element, and the elastic force of the elastic element drives the first wave surface and the second wave surface to press together, increasing the maximum friction between the first wave surface and the second wave surface; when the swing arm assembly rotates in the first direction, the pressing block moves closer to the first pressing wheel along the axial direction of the first pressing wheel, the pressing block releases the elastic element, and the elastic force of the elastic element decreases, so as to reduce the maximum friction between the first wave surface and the second wave surface.

[0011] Furthermore, the other end of the first pressing wheel in the axial direction has a first protrusion, which spirally protrudes along the axial direction of the first pressing wheel. A first climbing surface is located on the first protrusion, and the first climbing surface includes a first spiral surface and a first abutting surface, which are respectively connected to both ends of the first spiral surface. The end of the pressure block facing the first pressing wheel has a second protrusion, which spirally protrudes along the axial direction of the pressure block. A second climbing surface is located on the second protrusion, and the second climbing surface includes a second spiral surface and a second abutting surface, which are respectively connected to both ends of the second spiral surface. Wherein, in the swing arm assembly along the first direction... During rotation, the first abutment surface and the second abutment surface approach each other, and the first helical surface and the second helical surface slide relative to each other, so that the pressure block approaches the first pressing wheel along the axial direction of the first pressing wheel; when the cleaning brush assembly moves to the second position, the first abutment surface and the second abutment surface abut together; when the swing arm assembly rotates in the opposite direction to the first direction, the first abutment surface and the second abutment surface move away from each other, and the first helical surface and the second helical surface slide relative to each other, so that the pressure block moves away from the first pressing wheel along the axial direction of the first pressing wheel; when the cleaning brush assembly moves to the first position, the distance between the first abutment surface and the second abutment surface is at its maximum.

[0012] Furthermore, the end of the second pressing wheel facing the first pressing wheel has a mating groove, the bottom surface of the mating groove is a second wave-shaped surface, and at least a portion of the first pressing wheel without the first tooth in the circumferential direction extends into the mating groove and slides and is limited to fit with the inner wall of the mating groove.

[0013] Furthermore, the second pressing wheel has a positioning groove at one end facing the first pressing wheel, the opening of the positioning groove penetrating the second wave-shaped surface; the first pressing wheel has a positioning post at one end facing the second pressing wheel, the positioning post protruding from the first wave-shaped surface, at least a portion of the positioning post extending into the positioning groove and slidingly limiting its engagement with the inner wall of the positioning groove; and / or, the second driving assembly includes a second driving motor and a transmission structure for transmission, the transmission structure being connected to the rotating shaft of the second driving motor and meshing with the first gear tooth of the first pressing wheel, so that the second driving motor drives the first pressing wheel to rotate; and / or, the swing arm assembly includes a swing housing and a rotating gear, the rotating gear being fixedly mounted on the swing housing, the swing housing being rotatably mounted on the bearing assembly, the second gear tooth of the second pressing wheel meshing with the rotating gear, so as to drive the rotating gear and the swing housing to rotate.

[0014] Furthermore, the sweeping brush moving structure also includes a lifting component, which is connected to the swing arm component and is used to drive the swing arm component to move closer to or away from the carrier component in a direction perpendicular to the rotation direction of the swing arm component, so that the sweeping brush component moves closer to or away from the position to be cleaned.

[0015] Furthermore, the lifting assembly includes a first rotating shaft, a threaded transmission structure, and a damper; one end of the first rotating shaft is driven to connect to a first driving assembly, which drives the first rotating shaft to rotate; the other end of the first rotating shaft is threadedly engaged with the threaded transmission structure, and the end of the threaded transmission structure away from the first rotating shaft is connected to the swing arm assembly; the axial direction of the first rotating shaft and the axial direction of the threaded transmission structure are both perpendicular to the rotation direction of the swing arm assembly; the damper abuts against the outer periphery of the threaded transmission structure to provide frictional force to prevent the threaded transmission structure from rotating; wherein, the first rotating shaft drives the cleaning brush assembly to rotate by driving the threaded transmission structure to rotate; under the action of the frictional force of the damper, the threaded transmission structure rotates relative to the first rotating shaft when the first rotating shaft rotates, and the threaded transmission structure moves along the axial direction of the first rotating shaft, so that the swing arm assembly moves closer to or further away from the bearing assembly in a direction perpendicular to the rotation direction of the swing arm assembly.

[0016] Furthermore, the damper includes a cylinder, an elastic arm, and a damping element; the cylinder is sleeved outside the threaded transmission structure; the elastic arm is made of elastic material, one end of the elastic arm is set on the cylinder, and the damping element is set on the other end of the elastic arm. The damping element abuts against the outer periphery of the threaded transmission structure to provide frictional force to prevent the threaded transmission structure from rotating; wherein, the elastic arm provides elastic force through its own deformation, and the elastic force drives the damping element to press against the outer periphery of the threaded transmission structure.

[0017] Furthermore, the swing arm assembly includes a swing housing and at least two transmission gears. The swing housing includes a mating sleeve and a swing arm body. The mating sleeve is fixedly mounted on the swing arm body and rotatably mounted on the bearing assembly. The mating sleeve can slide relative to the bearing assembly in a direction perpendicular to the rotation direction of the swing arm assembly. At least a portion of the lifting assembly is disposed within the mating sleeve. At least two transmission gears are rotatably mounted within the swing arm body and are sequentially meshed to form at least two stages of speed transmission. The transmission gear closest to the threaded transmission structure is the primary gear, and the gear furthest from the threaded transmission structure is the secondary gear. The transmission gear is a final stage gear, and one end of the primary gear has an insertion hole in the axial direction; one end of the threaded transmission structure passes through the fitting sleeve and extends into the insertion hole, and is slidably limited to the insertion hole. The threaded transmission structure can slide relative to the insertion hole in a direction perpendicular to the rotation direction of the swing arm assembly; the final stage gear is connected to the cleaning brush assembly, and the threaded transmission structure drives the cleaning brush assembly to rotate by driving the primary gear and the final stage gear to rotate; and / or, the lifting assembly also includes a limiting member, which is used to limit the axial movement distance of the threaded transmission structure along the first rotating shaft to prevent the threaded transmission structure from disengaging from the first rotating shaft.

[0018] Furthermore, the first drive assembly includes a sweeping motor and at least two gears. The at least two gears are rotatably disposed within the bearing assembly and are sequentially meshed to form at least two levels of speed transmission. The gear closest to the sweeping motor is the initial speed gear, and the gear furthest from the sweeping motor is the final speed gear. The initial speed gear is connected to the shaft of the sweeping motor, and the final speed gear is connected to the end of the first shaft furthest from the threaded transmission structure. The sweeping motor drives the first shaft to rotate by driving the initial speed gear and the final speed gear to rotate.

[0019] Furthermore, the cleaning brush assembly includes a rotating body and at least one brush structure. The rotating body is rotatably mounted on the swing arm assembly and is drivenly connected to the first drive assembly. The at least one brush structure is distributed circumferentially along the rotating body. The brush structure includes an elastic body and a brush head. The elastic body is made of an elastic material. One end of the elastic body is connected to the rotating body, and the brush head is mounted on the other end of the elastic body. The first drive assembly drives the rotating body to rotate, thereby driving the brush head of the at least one brush structure to clean the area to be cleaned.

[0020] According to another aspect of the present invention, a floor cleaning device is provided, which includes the above-described sweeping brush movable structure.

[0021] Furthermore, the floor cleaning device is a sweeping robot, which includes a robot body, and at least a portion of the sweeping brush movable structure is disposed at the bottom of the robot body; the position where the sweeping brush assembly is closest to the robot body is the storage position, and the position where the sweeping brush assembly is farthest from the robot body is the extension position; the rotation direction of the sweeping brush assembly when it moves from the storage position to the extension position is the first direction; wherein, when the sweeping brush assembly is in the storage position, the locking component is in a locked state to prevent the swing arm assembly from rotating along the first direction under the action of external force; the sweeping robot is projected vertically onto a horizontal plane, and a portion of the projection of the sweeping brush assembly in the extension position is located outside the projection of the robot body; and / or, a portion of the projection of the sweeping brush assembly in the storage position is located outside the projection of the robot body.

[0022] Applying the technical solution of this utility model, this utility model provides a sweeping brush moving structure, including: a first driving component, a second driving component, a swing arm component, a sweeping brush component, a supporting component, and a locking component; the sweeping brush component is rotatably disposed at one end of the swing arm component, and the other end of the swing arm component can rotate relative to the supporting component; the first driving component is drivenly connected to the sweeping brush component to drive the sweeping brush component to rotate; wherein, the second driving component is installed on the supporting component, and the second driving component drives the swing arm component to swing through the locking component to drive the sweeping brush component to move closer to or away from the supporting component; the locking component has a locked state and an unlocked state. In the locked state, the locking component locks the swing arm component to prevent the swing arm component from rotating; in the unlocked state, the swing arm component can rotate.

[0023] This invention, through the coordinated operation of a first drive component, a second drive component, a swing arm component, a sweeping brush component, a supporting component, and a locking component, achieves efficient extension and retraction of the sweeping brush component, ensuring effective cleaning of hard-to-reach areas. It also locks the sweeping brush component, preventing it from being moved by external forces when in its retracted or extended state, thus preventing it from extending when not cleaning hard-to-reach areas and avoiding collisions with other objects. The sweeping brush's movable structure proposed in this invention is well-suited for robotic vacuum cleaners, not only avoiding interference with the robot's normal movement but also preventing damage to the sweeping brush component, ensuring effective cleaning and extending its lifespan. This invention is simple in structure and low in cost, achieving the swinging and locking of the sweeping brush component through a simple structure, facilitating assembly and subsequent maintenance, and is suitable for large-scale deployment. Attached Figure Description

[0024] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0025] Figure 1 A schematic diagram of the external structure of a portion of the sweeping brush movable structure provided in an embodiment of the present invention is shown.

[0026] Figure 2 This diagram illustrates a partial structural fit of the sweeping brush mechanism provided in an embodiment of the present invention near the locking assembly.

[0027] Figure 3 A schematic diagram of the external structure of the first pressing wheel provided in an embodiment of the present invention in an upright position is shown.

[0028] Figure 4A schematic diagram of the external structure of the first pressing wheel provided in an embodiment of the present invention in an inverted state is shown;

[0029] Figure 5 A schematic diagram of the specific structure of the second pressing wheel provided in an embodiment of the present invention is shown.

[0030] Figure 6 A schematic diagram of the specific structure of the pressure block provided in the embodiment of this utility model in the inverted state is shown;

[0031] Figure 7 A partial structural schematic diagram of the sweeping brush moving structure provided in an embodiment of this utility model is shown;

[0032] Figure 8 It shows Figure 7 Internal structural sectional view;

[0033] Figure 9 A schematic diagram of the external structure of the lifting assembly provided in an embodiment of the present invention is shown;

[0034] Figure 10 A schematic diagram of the internal structure of the lifting assembly provided in an embodiment of the present invention is shown.

[0035] Figure 11 A schematic diagram of the external structure of the swing box provided in an embodiment of the present invention is shown;

[0036] Figure 12 A schematic diagram of the internal structure of the swing arm body provided in an embodiment of the present invention is shown;

[0037] Figure 13 A schematic diagram of a portion of the brush moving structure provided in an embodiment of the present invention is shown near the speed-changing gear.

[0038] Figure 14 The diagram shows a partial structural schematic of the ground cleaning device provided in an embodiment of the present invention from a top-down perspective.

[0039] The above figures include the following reference numerals:

[0040] 10. First drive assembly; 11. Sweeping motor; 12. Speed ​​change gear; 121. Initial speed gear; 122. Final speed gear;

[0041] 20. Second drive assembly; 21. Second drive motor;

[0042] 30. Swing arm assembly; 31. Swing housing; 311. Mating sleeve; 312. Swing arm body; 32. Rotating gear; 33. Transmission gear; 331. Primary gear; 332. Final gear; 333. Insertion hole;

[0043] 40. Sweeping brush assembly; 41. Rotating body; 42. Sweeping brush structure; 421. Elastomer; 422. Brush head;

[0044] 50. Load-bearing components;

[0045] 60. Locking assembly; 61. First pressing wheel; 611. First gear tooth; 612. First wave-shaped surface; 613. First climbing surface; 614. First helical surface; 615. First abutment surface; 616. Positioning pin; 62. Second pressing wheel; 621. Second gear tooth; 622. Second wave-shaped surface; 623. Mating groove; 624. Positioning groove; 63. Pressure block; 631. Second climbing surface; 632. Second helical surface; 633. Second abutment surface; 64. Elastic element;

[0046] 70. Lifting assembly; 71. First rotating shaft; 72. Threaded transmission structure; 73. Damper; 731. Cylinder; 732. Elastic arm; 733. Damping component;

[0047] 80. Robot body; 81. Storage location; 82. Extension location. Detailed Implementation

[0048] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0049] like Figures 1 to 14 As shown, an embodiment of this utility model provides a sweeping brush moving structure, including: a first driving component 10, a second driving component 20, a swing arm component 30, a sweeping brush component 40, a supporting component 50, and a locking component 60; the sweeping brush component 40 is rotatably disposed at one end of the swing arm component 30, and the other end of the swing arm component 30 is rotatable relative to the supporting component 50; the first driving component 10 is drivenly connected to the sweeping brush component 40 to drive the sweeping brush component 40 to rotate; wherein, the second driving component 20 is installed on the supporting component 50, and the second driving component 20 drives the swing arm component 30 to swing through the locking component 60 to drive the sweeping brush component 40 to move closer to or away from the supporting component 50; the locking component 60 has a locked state and an unlocked state. In the locked state, the locking component 60 locks the swing arm component 30 to prevent the swing arm component 30 from rotating; in the unlocked state, the swing arm component 30 is rotatable.

[0050] This invention, through the coordinated operation of a first drive assembly 10, a second drive assembly 20, a swing arm assembly 30, a sweeping brush assembly 40, a supporting assembly 50, and a locking assembly 60, achieves efficient extension and retraction of the sweeping brush assembly 40, ensuring effective cleaning of hard-to-reach areas. It also locks the sweeping brush assembly 40, preventing it from being moved by external forces when in its retracted or extended state, thus preventing it from extending when not cleaning hard-to-reach areas and avoiding collisions with other objects. The sweeping brush movement structure proposed in this invention is well-suited for robotic vacuum cleaners, not only avoiding interference with the robot's normal movement but also preventing damage to the sweeping brush assembly 40, ensuring effective cleaning and extending its lifespan. This invention is simple in structure and low in cost, achieving the swinging and locking of the sweeping brush assembly 40 through a simple structure, facilitating assembly and subsequent maintenance, and is suitable for large-scale deployment.

[0051] like Figure 14 As shown, the first position is the position where the sweeping brush assembly 40 is closest to the support assembly 50, and the second position is the position where the sweeping brush assembly 40 is farthest from the support assembly 50. The first direction is the rotation direction when the swing arm assembly 30 drives the sweeping brush assembly 40 to move from the first position to the second position. When the sweeping brush assembly 40 is in the first position, the locking assembly 60 is in a locked state to prevent the swing arm assembly 30 from rotating along the first direction under the action of external force.

[0052] By defining two positions of the cleaning brush assembly 40 on the carrier assembly 50 (e.g.) Figure 14 The locking component 60, with its retracted position 81 and extended position 82, and swing direction, ensures that when the cleaning brush assembly 40 is in the first position, the locking component 60 can lock the swing arm assembly 30, preventing the cleaning brush assembly 40 from swinging unexpectedly under external force. This provides additional stability when it is closest to the support component 50 (e.g., the robot body 80), avoiding improper operation of external forces in the retracted state.

[0053] like Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the locking assembly 60 includes a first pressing wheel 61 and a second pressing wheel 62, a pressing block 63, and an elastic member 64. The second drive assembly 20 is drivenly connected to the first pressing wheel 61, and one end of the first pressing wheel 61 is driven by friction with one end of the second pressing wheel 62. One end of the pressing block 63 is engaged with the first pressing wheel 61 by an inclined surface, so that the pressing block 63 can move axially with the first pressing wheel 61 when the first pressing wheel 61 rotates. The other end of the pressing block 63 abuts against the elastic member 64. The elastic member 64 is used to provide elastic force along the axial direction of the first pressing wheel 61. When the cleaning brush assembly 40 moves to the first position, the distance between the pressing block 63 and the first pressing wheel 61 is the largest, and the elastic force of the elastic member 64 is the largest, so that the locking assembly 60 is in a locked state. When the cleaning brush assembly 40 moves to the second position, the distance between the pressing block 63 and the first pressing wheel 61 is the smallest, and the elastic force is the smallest, so that the locking assembly 60 is in an unlocked state.

[0054] By defining the locking assembly 60 as including the first pressing wheel 61, the second pressing wheel 62, the pressing block 63, and the elastic element 64, and utilizing friction transmission and inclined plane engagement, the locking assembly 60 can automatically lock and unlock at different positions, simplifying the operation process and improving the reliability and automatic adjustment capability of the sweeping brush's moving structure.

[0055] like Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the first pressing wheel 61 has a first tooth 611 arranged around its circumference, and a first wave-shaped surface 612 arranged axially at one end; the second pressing wheel 62 has a second tooth 621 arranged around its circumference, and a second wave-shaped surface 622 arranged axially at one end of the second pressing wheel 62 facing the first pressing wheel 61; the first tooth 611 meshes with the second driving assembly 20, the first wave-shaped surface 612 cooperates with the second wave-shaped surface 622, and the second tooth 621 meshes with the swing arm assembly 30; wherein, the second driving assembly 20 is driven by the first tooth 611. The first pressing wheel 61 rotates, and the first pressing wheel 61 drives the second pressing wheel 62 to rotate through the friction between the first wave surface 612 and the second wave surface 622. The second pressing wheel 62 drives the swing arm assembly 30 to rotate through the second gear tooth 621. When an external force prevents the swing arm assembly 30 from rotating and the driving force of the first pressing wheel 61 on the second pressing wheel 62 is greater than the maximum friction between the first wave surface 612 and the second wave surface 622, the second pressing wheel 62 is stationary, and the first wave surface 612 and the second wave surface 622 slide relative to each other, so that the first pressing wheel 61 and the second driving assembly 20 can rotate.

[0056] By setting up a structure with a first gear 611, a first wave surface 612, a second gear 621, and a second wave surface 622, and utilizing a combination of friction and gear meshing, precise control and power transmission of the swing arm assembly 30's swing are achieved. By setting the first wave surface 612 and the second wave surface 622 to slide relative to each other, the second drive motor 21 will not jam when an external force prevents the swing arm assembly 30 from rotating, thus avoiding overheating and damage to the second drive motor 21 due to jamming. This effectively protects the second drive motor 21, prevents it from being damaged by overload, and improves the overall working stability and durability.

[0057] like Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the first pressing roller 61 has a first climbing surface 613 at one end in the axial direction; the pressing block 63 has one end facing the first pressing roller 61 and has a second climbing surface 631, and the other end abuts against the elastic member 64; the first climbing surface 613 is inclined along the axial direction of the first pressing roller 61, and the second climbing surface 631 is inclined along the axial direction of the pressing block 63, and the axial direction of the first pressing roller 61 is parallel to the axial direction of the pressing block 63; the first climbing surface 613 and the second climbing surface 631 are in sliding engagement; wherein, when the swing arm assembly 30 rotates in the opposite direction to the first direction, the pressing block 63 moves away from the first pressing wheel 61 along the axial direction of the first pressing wheel 61. The pressing block 63 compresses the elastic element 64. The elastic force of the elastic element 64 drives the first wave surface 612 and the second wave surface 622 to press together, increasing the maximum friction between the first wave surface 612 and the second wave surface 622. When the swing arm assembly 30 rotates along the first direction, the pressing block 63 moves closer to the first pressing wheel 61 along the axial direction of the first pressing wheel 61. The pressing block 63 releases the elastic element 64, and the elastic force of the elastic element 64 decreases, thereby reducing the maximum friction between the first wave surface 612 and the second wave surface 622.

[0058] By setting the first climbing surface 613 and the second climbing surface 631 to cooperate with each other, the distance and pressure between the pressure block 63 and the elastic element 64 are effectively adjusted, ensuring that the locking function is automatically adjusted when the cleaning brush assembly 40 swings to different positions. This not only enhances the reliability of locking, but also reduces energy consumption during the locking process and improves the overall work efficiency.

[0059] like Figure 3 , Figure 4 and Figure 6As shown, the other end of the first pressing wheel 61 in the axial direction has a first protrusion, which spirals out along the axial direction of the first pressing wheel 61. A first climbing surface 613 is located on the first protrusion. The first climbing surface 613 includes a first spiral surface 614 and a first abutting surface 615, which are respectively connected to both ends of the first spiral surface 614. The end of the pressure block 63 facing the first pressing wheel 61 has a second protrusion, which spirals out along the axial direction of the pressure block 63. A second climbing surface 631 is located on the second protrusion. The second climbing surface 631 includes a second spiral surface 632 and a second abutting surface 633, which are respectively connected to both ends of the second spiral surface 632. When the swing arm assembly 30 rotates in the first direction... The first contact surface 615 and the second contact surface 633 approach each other, and the first helical surface 614 and the second helical surface 632 slide relative to each other, so that the pressure block 63 approaches the first pressure wheel 61 along the axial direction of the first pressure wheel 61; when the cleaning brush assembly 40 moves to the second position, the first contact surface 615 and the second contact surface 633 abut against each other; when the swing arm assembly 30 rotates in the opposite direction to the first direction, the first contact surface 615 and the second contact surface 633 move away from each other, and the first helical surface 614 and the second helical surface 632 slide relative to each other, so that the pressure block 63 moves away from the first pressure wheel 61 along the axial direction of the first pressure wheel 61; when the cleaning brush assembly 40 moves to the first position, the distance between the first contact surface 615 and the second contact surface 633 is the largest.

[0060] By setting a first spiral surface 614, a first abutting surface 615, a second spiral surface 632, and a second abutting surface 633, and utilizing the cooperative design of the spiral and the abutting surface, the pressure block 63 can move smoothly when the swing arm assembly 30 swings, accurately adjust the locking pressure, ensure the locking effect, reduce friction and wear during the transmission process, and extend the overall service life.

[0061] like Figure 3 , Figure 4 and Figure 5 As shown, the second pressing wheel 62 has a mating groove 623 at one end facing the first pressing wheel 61. The bottom surface of the mating groove 623 is a second wave surface 622. At least a portion of the first pressing wheel 61 that does not have the first tooth 611 in the circumferential direction extends into the mating groove 623 and slides and is limited to fit with the inner wall of the mating groove 623.

[0062] By setting the inner wall of the mating groove 623 for sliding limit, the stability and accuracy of the second pressing wheel 62 and the first pressing wheel 61 in the transmission process are enhanced, while unnecessary sliding is avoided, power transmission efficiency is improved, and wear is reduced.

[0063] like Figure 3 , Figure 4 and Figure 5As shown, the second pressing wheel 62 has a positioning groove 624 at one end facing the first pressing wheel 61, and the opening of the positioning groove 624 penetrates the second wave-shaped surface 622. The first pressing wheel 61 has a positioning post 616 at one end facing the second pressing wheel 62, and the positioning post 616 protrudes from the first wave-shaped surface 612. At least a portion of the positioning post 616 extends into the positioning groove 624 and slides and limits its movement against the inner wall of the positioning groove 624; and / or, as Figure 2 and Figure 13 As shown, the second drive assembly 20 includes a second drive motor 21 and a transmission structure for transmission. The transmission structure is connected to the rotating shaft of the second drive motor 21 and meshes with the first gear tooth 611 of the first pressing wheel 61, so that the second drive motor 21 drives the first pressing wheel 61 to rotate; and / or, as shown Figure 2 and Figure 11 As shown, the swing arm assembly 30 includes a swing housing 31 and a rotating gear 32. The rotating gear 32 is fixedly mounted on the swing housing 31, and the swing housing 31 is rotatably mounted on the bearing assembly 50. The second gear tooth 621 of the second pressing wheel 62 meshes with the rotating gear 32 to drive the rotating gear 32 and the swing housing 31 to rotate.

[0064] By setting the positioning groove 624 and positioning column 616 to cooperate with each other, and the connection method between the second drive motor 21 and the transmission structure, the high efficiency of power transmission and the swing accuracy of the swing arm assembly 30 are ensured, while also facilitating assembly and maintenance.

[0065] like Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, the sweeping brush moving structure also includes a lifting assembly 70, which is connected to the swing arm assembly 30 and is used to drive the swing arm assembly 30 to move closer to or away from the bearing assembly 50 in a direction perpendicular to the rotation direction of the swing arm assembly 30, so that the sweeping brush assembly 40 moves closer to or away from the position to be cleaned.

[0066] By setting up the lifting component 70, the swing arm component 30 and the cleaning brush component 40 are allowed to move up and down in a plane perpendicular to their swing direction. This not only increases the cleaning range and flexibility of the subsequent sweeping robot and realizes the separation of the cleaning brush component 40 from the ground, but also allows the height of the cleaning brush component 40 to be adjusted when cleaning dirt of different heights or terrains, thus improving cleaning efficiency and adaptability.

[0067] like Figure 8 , Figure 9 and Figure 10As shown, the lifting assembly 70 includes a first rotating shaft 71, a threaded transmission structure 72, and a damper 73. One end of the first rotating shaft 71 is driven to rotate by the first drive assembly 10. The other end of the first rotating shaft 71 is threaded to the threaded transmission structure 72, and the end of the threaded transmission structure 72 away from the first rotating shaft 71 is connected to the swing arm assembly 30. The axial direction of both the first rotating shaft 71 and the threaded transmission structure 72 is perpendicular to the rotation direction of the swing arm assembly 30. The damper 73 abuts against the outer periphery of the threaded transmission structure 72 to provide frictional force that prevents the threaded transmission structure 72 from rotating. The first rotating shaft 71 drives the cleaning brush assembly 40 to rotate by driving the threaded transmission structure 72 to rotate. Under the action of the frictional force of the damper 73, the threaded transmission structure 72 rotates relative to the first rotating shaft 71 when the first rotating shaft 71 rotates, and the threaded transmission structure 72 moves along the axial direction of the first rotating shaft 71 so that the swing arm assembly 30 moves closer to or further away from the bearing assembly 50 in a direction perpendicular to the rotation direction of the swing arm assembly 30.

[0068] By setting the lifting assembly 70 to include a first rotating shaft 71, a threaded transmission structure 72, and a damper 73, the height of the swing arm assembly 30 can be precisely adjusted and stably controlled through the frictional force of the threaded transmission and the damper. Furthermore, no additional drive source is required, which simplifies the structure of the lifting assembly 70 and effectively reduces costs.

[0069] like Figure 8 , Figure 9 and Figure 10 As shown, the damper 73 includes a cylindrical body 731, an elastic arm 732, and a damping element 733. The cylindrical body 731 is sleeved on the outside of the threaded transmission structure 72. The elastic arm 732 is made of elastic material, with one end of the elastic arm 732 disposed on the cylindrical body 731 and the damping element 733 disposed on the other end of the elastic arm 732. The damping element 733 abuts against the outer periphery of the threaded transmission structure 72 to provide frictional force to prevent the threaded transmission structure 72 from rotating. The elastic arm 732 provides elastic force through its own deformation, and the elastic force drives the damping element 733 to press against the outer periphery of the threaded transmission structure 72.

[0070] By setting the damper 73, which includes a cylinder 731, an elastic arm 732, and a damping element 733, the simple combination of the elastic arm 732 and the damping element 733 not only provides stable friction but also allows for a certain degree of deformation, improving the adaptability and durability of the damper 73 and ensuring a stable damping effect under various working conditions, thereby improving the working reliability of the lifting assembly 70.

[0071] like Figure 11 and Figure 12As shown, the swing arm assembly 30 includes a swing housing 31 and at least two transmission gears 33. The swing housing 31 includes a mating sleeve 311 and a swing arm body 312. The mating sleeve 311 is fixedly mounted on the swing arm body 312 and rotatably mounted on the bearing assembly 50. The mating sleeve 311 can slide relative to the bearing assembly 50 in a direction perpendicular to the rotation direction of the swing arm assembly 30. At least a portion of the lifting assembly 70 is disposed within the mating sleeve 311. At least two transmission gears 33 are rotatably disposed within the swing arm body 312 and are sequentially meshed to form at least two-stage speed transmission. The transmission gear 33 closest to the threaded transmission structure 72 is the primary gear 331, and the transmission gear furthest from the threaded transmission structure 72 is the primary gear 331. 33 is the final stage gear 332, and one end of the primary gear 331 in the axial direction has an insertion hole 333; one end of the threaded transmission structure 72 passes through the mating sleeve 311 and extends into the insertion hole 333, and is slidably limited to the insertion hole 333. The threaded transmission structure 72 can slide relative to the insertion hole 333 in a direction perpendicular to the rotation direction of the swing arm assembly 30; the final stage gear 332 is connected to the cleaning brush assembly 40, and the threaded transmission structure 72 drives the cleaning brush assembly 40 to rotate by driving the primary gear 331 and the final stage gear 332 to rotate; and / or, the lifting assembly 70 also includes a limiting member, which is used to limit the axial movement distance of the threaded transmission structure 72 along the first rotating shaft 71 to prevent the threaded transmission structure 72 from disengaging from the first rotating shaft 71.

[0072] By combining the sleeve 311, the swing arm 312, and at least two transmission gears 33, efficient transmission of the swing and lifting of the sweeping brush assembly 40 is achieved. At the same time, a limit function is provided to ensure safety and stability during the transmission process and to simplify the complexity of assembly and adjustment.

[0073] like Figure 1 , Figure 7 and Figure 13 As shown, the first drive assembly 10 includes a sweeping motor 11 and at least two gears 12. The at least two gears 12 are rotatably disposed within the bearing assembly 50 and are sequentially meshed to form at least two-stage speed transmission. The gear 12 closest to the sweeping motor 11 is the initial speed gear 121, and the gear 12 furthest from the sweeping motor 11 is the final speed gear 122. The initial speed gear 121 is connected to the rotating shaft of the sweeping motor 11, and the final speed gear 122 is connected to the end of the first rotating shaft 71 away from the threaded transmission structure 72. The sweeping motor 11 drives the first rotating shaft 71 to rotate by driving the initial speed gear 121 and the final speed gear 122 to rotate.

[0074] By setting up the sweeping motor 11 and at least two speed-changing gears 12, the efficient transmission of power and speed regulation of the sweeping motor 11 are achieved, ensuring the optimal rotation speed of the sweeping brush assembly 40 under different cleaning tasks, and improving the cleaning effect and transmission energy efficiency ratio.

[0075] like Figure 1 As shown, the cleaning brush assembly 40 includes a rotating body 41 and at least one brush structure 42. The rotating body 41 is rotatably mounted on the swing arm assembly 30 and is drivenly connected to the first drive assembly 10. The at least one brush structure 42 is distributed circumferentially along the rotating body 41. The brush structure 42 includes an elastic body 421 and a brush head 422. The elastic body 421 is made of an elastic material. One end of the elastic body 421 is connected to the rotating body 41, and the brush head 422 is mounted on the other end of the elastic body 421. The first drive assembly 10 drives the rotating body 41 to rotate, thereby driving the brush head 422 of the at least one brush structure 42 to clean the area to be cleaned.

[0076] By configuring the sweeping brush assembly 40 to include a rotating body 41 and at least one sweeping brush structure 42, and utilizing the combined design of the elastomer 421 and the brush head 422, the sweeping brush assembly 40 can automatically adjust the contact pressure when it comes into contact with dirt of different hardness and shape, thereby improving cleaning efficiency and adaptability to various floor surfaces, while reducing brush head wear and extending service life.

[0077] This utility model also provides a floor cleaning device, which includes the above-mentioned sweeping brush movable structure.

[0078] The floor cleaning device proposed in this utility model can not only achieve intelligent cleaning and swinging, but also has a locking function and a 40° height adjustment capability for the cleaning brush assembly, which greatly improves the cleaning range and cleaning efficiency. It is suitable for various usage environments and meets users' needs for efficient, intelligent and flexible floor cleaning.

[0079] like Figure 14As shown, the floor cleaning device is a robotic vacuum cleaner, which includes a robot body 80. At least a portion of the brush assembly is located at the bottom of the robot body 80. The position where the brush assembly 40 is closest to the robot body 80 is the storage position 81, and the position where the brush assembly 40 is farthest from the robot body 80 is the extension position 82. The rotation direction of the brush assembly 40 when it moves from the storage position 81 to the extension position 82 is the first direction. When the brush assembly 40 is in the storage position 81, the locking component 60 is locked to prevent the swing arm assembly 30 from rotating in the first direction under external force. The robotic vacuum cleaner is projected vertically onto a horizontal plane. A portion of the projection of the brush assembly 40 in the extension position 82 is located outside the projection of the robot body 80. And / or, a portion of the projection of the brush assembly 40 in the storage position 81 is located outside the projection of the robot body 80.

[0080] This design ensures that the cleaning brush assembly 40, when used as a side brush, can be safely stored away when not in use, reducing space occupation, while extending fully when in use to expand the cleaning range, thus improving the practicality and smoothness of the robot vacuum. At the same time, by designing the projection of the cleaning brush assembly 40 onto the outside of the robot body's projection, it ensures that the cleaning brush assembly 40, when used as a side brush, can clean corners that are difficult for the robot body to reach, improving cleaning performance and optimizing the user experience.

[0081] In summary, this utility model provides a sweeping brush movable structure and a floor cleaning device. By configuring a first drive assembly 10, a second drive assembly 20, a swing arm assembly 30, a sweeping brush assembly 40, a supporting assembly 50, and a locking assembly 60 to work together, this utility model achieves efficient extension and retraction of the sweeping brush assembly 40, ensuring effective cleaning of hard-to-reach areas. It also locks the sweeping brush assembly 40, making it difficult for it to move by external forces when in its retracted and / or extended state. This prevents the sweeping brush assembly 40 from extending when cleaning hard-to-reach areas is not required, thus avoiding collisions with other objects. The sweeping brush movable structure proposed in this utility model is well-suited for robotic vacuum cleaners, not only without interfering with the normal movement of the robotic vacuum cleaner but also preventing damage to the sweeping brush assembly 40, ensuring the cleaning effect of the robotic vacuum cleaner and extending its service life. This utility model has a simple structure and low cost, achieving the swinging and locking of the sweeping brush assembly 40 through a simple structure, facilitating assembly and subsequent maintenance, and is suitable for large-scale promotion and use.

[0082] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0083] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0084] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0085] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0086] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0087] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sweeping brush mechanism, characterized in that, include: The assembly comprises a first drive assembly (10), a second drive assembly (20), a swing arm assembly (30), a sweeping brush assembly (40), a support assembly (50), and a locking assembly (60); the sweeping brush assembly (40) is rotatably disposed at one end of the swing arm assembly (30), and the other end of the swing arm assembly (30) is rotatable relative to the support assembly (50); the first drive assembly (10) is drivenly connected to the sweeping brush assembly (40) to drive the sweeping brush assembly (40) to rotate; wherein, the second drive assembly (10) is driven by the second drive assembly (20) to drive the sweeping brush assembly (40) to rotate; 20) Installed on the carrier assembly (50), the second drive assembly (20) drives the swing arm assembly (30) to swing through the locking assembly (60) to drive the sweeping brush assembly (40) to move closer to or away from the carrier assembly (50); the locking assembly (60) has a locked state and an unlocked state. In the locked state, the locking assembly (60) locks the swing arm assembly (30) to prevent the swing arm assembly (30) from rotating; in the unlocked state, the swing arm assembly (30) can rotate.

2. The sweeping brush moving structure according to claim 1, characterized in that, The first position is defined as the position where the cleaning brush assembly (40) is closest to the support assembly (50), and the second position is defined as the position where the cleaning brush assembly (40) is farthest from the support assembly (50). The first direction is defined as the rotation direction in which the swing arm assembly (30) drives the cleaning brush assembly (40) to move from the first position to the second position. When the cleaning brush assembly (40) is in the first position, the locking assembly (60) is in the locked state to prevent the swing arm assembly (30) from rotating along the first direction under the action of external force.

3. The sweeping brush moving structure according to claim 2, characterized in that, The locking assembly (60) includes a first pressing wheel (61) and a second pressing wheel (62), a pressure block (63), and an elastic element (64); the second driving assembly (20) is drivenly connected to the first pressing wheel (61), and one end of the first pressing wheel (61) is driven by friction with one end of the second pressing wheel (62); one end of the pressure block (63) is engaged with the first pressing wheel (61) by an inclined surface, so that the pressure block (63) is axially movable in the first pressing wheel (61) when the first pressing wheel (61) rotates, and the other end of the pressure block (63) is engaged with the elastic element. (64) Abutting; the elastic element (64) is used to provide elastic force along the axial direction of the first pressing wheel (61); wherein, when the sweeping brush assembly (40) moves to the first position, the distance between the pressing block (63) and the first pressing wheel (61) is at its maximum, and the elastic force of the elastic element (64) is at its maximum, so that the locking assembly (60) is in the locked state; when the sweeping brush assembly (40) moves to the second position, the distance between the pressing block (63) and the first pressing wheel (61) is at its minimum, and the elastic force is at its minimum, so that the locking assembly (60) is in the unlocked state.

4. The sweeping brush moving structure according to claim 3, characterized in that, The first pressing wheel (61) has a first tooth (611) arranged around its circumference, and a first wave-shaped surface (612) arranged undulatingly along its axial direction at one end; the second pressing wheel (62) has a second tooth (621) arranged around its circumference, and a second wave-shaped surface (622) arranged undulatingly along its axial direction at one end of the second pressing wheel (62) facing the first pressing wheel (61); the first tooth (611) meshes with the second driving assembly (20), the first wave-shaped surface (612) cooperates with the second wave-shaped surface (622), and the second tooth (621) meshes with the swing arm assembly (30); wherein, the second driving assembly (20) drives the first pressing wheel (61) through the first tooth (611). 1) Rotation: The first pressing wheel (61) drives the second pressing wheel (62) to rotate through the friction between the first wave surface (612) and the second wave surface (622). The second pressing wheel (62) drives the swing arm assembly (30) to rotate through the second gear tooth (621). When an external force prevents the swing arm assembly (30) from rotating and the driving force of the first pressing wheel (61) on the second pressing wheel (62) is greater than the maximum friction between the first wave surface (612) and the second wave surface (622), the second pressing wheel (62) is stationary, and the first wave surface (612) and the second wave surface (622) slide relative to each other, so that the first pressing wheel (61) and the second driving assembly (20) can rotate.

5. The sweeping brush moving structure according to claim 4, characterized in that, The first pressing wheel (61) has a first climbing surface (613) at one end in the axial direction; the pressing block (63) has one end facing the first pressing wheel (61) and has a second climbing surface (631), and the other end abuts against the elastic member (64); the first climbing surface (613) is inclined along the axial direction of the first pressing wheel (61), the second climbing surface (631) is inclined along the axial direction of the pressing block (63), and the axial direction of the first pressing wheel (61) is parallel to the axial direction of the pressing block (63); the first climbing surface (613) and the second climbing surface (631) are in sliding engagement; When the swing arm assembly (30) rotates in the opposite direction to the first direction, the pressure block (63) moves away from the first pressure wheel (61) along the axial direction of the first pressure wheel (61), the pressure block (63) compresses the elastic member (64), and the elastic force of the elastic member (64) drives the first wave surface (612) and the second wave surface (622) to press together, increasing the maximum friction between the first wave surface (612) and the second wave surface (622); When the swing arm assembly (30) rotates in the first direction, the pressure block (63) approaches the first pressure wheel (61) along the axial direction of the first pressure wheel (61), the pressure block (63) releases the elastic element (64), and the elastic force of the elastic element (64) decreases to reduce the maximum frictional force between the first wave surface (612) and the second wave surface (622).

6. The sweeping brush moving structure according to claim 5, characterized in that, The first pressing wheel (61) has a first protrusion at the other end in the axial direction. The first protrusion spirals out along the axial direction of the first pressing wheel (61). The first climbing surface (613) is located on the first protrusion. The first climbing surface (613) includes a first spiral surface (614) and a first abutting surface (615). The first abutting surface (615) is connected to both ends of the first spiral surface (614). The pressing block (63) has a second protrusion at one end facing the first pressing wheel (61). The second protrusion spirals out along the axial direction of the pressing block (63). The second climbing surface (631) is located on the second protrusion. The second climbing surface (631) includes a second spiral surface (632) and a second abutting surface (633). The second abutting surface (633) is connected to both ends of the second spiral surface (632). When the swing arm assembly (30) rotates along the first direction, the first abutting surface (615) and the second abutting surface (633) approach each other, and the first helical surface (614) and the second helical surface (632) slide relative to each other, so that the pressure block (63) approaches the first pressure wheel (61) along the axial direction of the first pressure wheel (61); when the cleaning brush assembly (40) moves to the second position, the first abutting surface (615) abuts against the second abutting surface (633); When the swing arm assembly (30) rotates in the opposite direction to the first direction, the first abutting surface (615) and the second abutting surface (633) move away from each other, and the first helical surface (614) and the second helical surface (632) slide relative to each other, so that the pressure block (63) moves away from the first pressure wheel (61) along the axial direction of the first pressure wheel (61); when the cleaning brush assembly (40) moves to the first position, the distance between the first abutting surface (615) and the second abutting surface (633) is at its maximum.

7. The sweeping brush moving structure according to claim 4, characterized in that, The second pressing wheel (62) has a mating groove (623) at one end facing the first pressing wheel (61). The bottom surface of the mating groove (623) is the second wave surface (622). At least a portion of the first pressing wheel (61) without the first tooth (611) in the circumferential direction extends into the mating groove (623) and slides and limits its engagement with the inner wall of the mating groove (623).

8. The sweeping brush moving structure according to claim 4, characterized in that, The second pressing wheel (62) has a positioning groove (624) at one end facing the first pressing wheel (61), the opening of the positioning groove (624) penetrates the second wave surface (622), the first pressing wheel (61) has a positioning post (616) at one end facing the second pressing wheel (62), the positioning post (616) protrudes from the first wave surface (612), at least a portion of the positioning post (616) extends into the positioning groove (624) and slides and limits its engagement with the inner wall of the positioning groove (624); And / or, the second drive assembly (20) includes a second drive motor (21) and a transmission structure for transmission, the transmission structure being connected to the shaft of the second drive motor (21) and meshing with the first gear tooth (611) of the first pressing wheel (61) so that the second drive motor (21) drives the first pressing wheel (61) to rotate; And / or, the swing arm assembly (30) includes a swing housing (31) and a rotating gear (32), the rotating gear (32) being fixedly mounted on the swing housing (31), the swing housing (31) being rotatably mounted on the bearing assembly (50), the second tooth (621) of the second pressing wheel (62) meshing with the rotating gear (32) to drive the rotating gear (32) and the swing housing (31) to rotate.

9. The sweeping brush moving structure according to claim 1, characterized in that, The sweeping brush moving structure also includes a lifting component (70), which is connected to the swing arm component (30) and is used to drive the swing arm component (30) to move closer to or away from the bearing component (50) in a direction perpendicular to the rotation direction of the swing arm component (30), so that the sweeping brush component (40) moves closer to or away from the position to be cleaned.

10. The sweeping brush moving structure according to claim 9, characterized in that, The lifting assembly (70) includes a first rotating shaft (71), a threaded transmission structure (72), and a damper (73); one end of the first rotating shaft (71) is driven to rotate by the first driving assembly (10); the other end of the first rotating shaft (71) is threaded to the threaded transmission structure (72), and the end of the threaded transmission structure (72) away from the first rotating shaft (71) is connected to the swing arm assembly (30); the axial direction of the first rotating shaft (71) and the axial direction of the threaded transmission structure (72) are both perpendicular to the rotation direction of the swing arm assembly (30); the damper (73) The first rotating shaft (71) abuts against the outer periphery of the threaded drive structure (72) to provide frictional force that prevents the threaded drive structure (72) from rotating; wherein, the first rotating shaft (71) drives the threaded drive structure (72) to rotate, thereby driving the cleaning brush assembly (40) to rotate; under the action of the frictional force of the damper (73), the threaded drive structure (72) rotates relative to the first rotating shaft (71) when the first rotating shaft (71) rotates, and the threaded drive structure (72) moves along the axial direction of the first rotating shaft (71) so that the swing arm assembly (30) moves closer to or further away from the bearing assembly (50) in a direction perpendicular to the rotation direction of the swing arm assembly (30).

11. The sweeping brush moving structure according to claim 10, characterized in that, The damper (73) includes a cylinder (731), an elastic arm (732), and a damping element (733); the cylinder (731) is sleeved on the outside of the threaded transmission structure (72); the elastic arm (732) is made of elastic material, one end of the elastic arm (732) is disposed on the cylinder (731), and the damping element (733) is disposed on the other end of the elastic arm (732). The damping element (733) abuts against the outer periphery of the threaded transmission structure (72) to provide frictional force to prevent the threaded transmission structure (72) from rotating; wherein, the elastic arm (732) provides elastic force through its own deformation, and the elastic force drives the damping element (733) to press against the outer periphery of the threaded transmission structure (72).

12. The sweeping brush moving structure according to claim 10, characterized in that, The swing arm assembly (30) includes a swing housing (31) and at least two transmission gears (33). The swing housing (31) includes a mating sleeve (311) and a swing arm body (312). The mating sleeve (311) is fixedly mounted on the swing arm body (312) and rotatably mounted on the bearing assembly (50). The mating sleeve (311) can slide relative to the bearing assembly (50) in a direction perpendicular to the rotation direction of the swing arm assembly (30). At least a portion of the lifting assembly (70) is disposed within the mating sleeve (311). At least two transmission gears (33) are rotatably mounted within the swing arm body (312) and are sequentially meshed to form at least two-stage speed transmission. The transmission gear closest to the threaded transmission structure (72) is... The gear (33) is the primary gear (331), and the transmission gear (33) furthest from the threaded transmission structure (72) is the final gear (332). One end of the primary gear (331) in the axial direction has an insertion hole (333). One end of the threaded transmission structure (72) passes through the mating sleeve (311) and extends into the insertion hole (333), and slides and limits the engagement with the insertion hole (333). The threaded transmission structure (72) can slide relative to the insertion hole (333) in a direction perpendicular to the rotation direction of the swing arm assembly (30). The final gear (332) is connected to the cleaning brush assembly (40). The threaded transmission structure (72) drives the cleaning brush assembly (40) to rotate by driving the primary gear (331) and the final gear (332) to rotate. And / or, the lifting assembly (70) further includes a limiting member for limiting the axial movement distance of the threaded drive structure (72) along the first rotating shaft (71) to prevent the threaded drive structure (72) from disengaging from the first rotating shaft (71).

13. The sweeping brush moving structure according to claim 10, characterized in that, The first drive assembly (10) includes a sweeping motor (11) and at least two gears (12). The at least two gears (12) are rotatably disposed in the bearing assembly (50) and are sequentially meshed to form at least two-stage transmission. The gear (12) closest to the sweeping motor (11) is the initial speed gear (121), and the gear (12) furthest from the sweeping motor (11) is the final speed gear (122). The initial speed gear (121) is connected to the shaft of the sweeping motor (11), and the final speed gear (122) is connected to the end of the first shaft (71) away from the threaded transmission structure (72). The sweeping motor (11) drives the first shaft (71) to rotate by driving the initial speed gear (121) and the final speed gear (122) to rotate.

14. The sweeping brush moving structure according to claim 1, characterized in that, The cleaning brush assembly (40) includes a rotating body (41) and at least one brush structure (42). The rotating body (41) is rotatably disposed on the swing arm assembly (30) and is drivenly connected to the first drive assembly (10). At least one brush structure (42) is distributed circumferentially along the rotating body (41); the brush structure (42) includes an elastic body (421) and a brush head (422), the elastic body (421) is made of elastic material, one end of the elastic body (421) is connected to the rotating body (41), and the brush head (422) is disposed on the other end of the elastic body (421); the first drive assembly (10) drives the rotating body (41) to rotate, thereby driving the brush head (422) of at least one brush structure (42) to clean the position to be cleaned.

15. A floor cleaning device, characterized in that, The ground cleaning device includes the sweeping brush structure as described in any one of claims 1 to 14.

16. The ground cleaning equipment according to claim 15, characterized in that, The floor cleaning device is a sweeping robot, which includes a robot body (80). At least a portion of the sweeping brush movable structure is disposed at the bottom of the robot body (80). The position closest to the robot body (80) of the sweeping brush assembly (40) is the storage position (81), and the position farthest from the robot body (80) of the sweeping brush assembly (40) is the extension position (82). The rotation direction of the sweeping brush assembly (40) driven by the swing arm assembly (30) from the storage position (81) to the extension position (82) is the first direction. When the sweeping brush assembly (40) is in the storage position (81), the locking assembly (60) is in the locked state to prevent the swing arm assembly (30) from rotating along the first direction under the action of external force. The sweeping robot is projected vertically onto a horizontal plane, and a portion of the projection of the sweeping brush assembly (40) at the extended position (82) is located outside the projection of the robot body (80); and / or, a portion of the projection of the sweeping brush assembly (40) at the retracted position (81) is located outside the projection of the robot body (80).

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