Side brush device and sweeping robot

Abstract

The utility model relates to a side brush device and a sweeping robot, the side brush device comprises a driving mechanism and a side brush mechanism, the side brush mechanism comprises a brush arm, a speed regulation assembly and a transmission part, the transmission part is in transmission connection with the driving mechanism, the brush arm is movably connected to the transmission part, and the speed regulation assembly is connected to the transmission part in a matched mode and used for changing the speed of the transmission part; wherein the driving mechanism rotates around a first direction, the side brush mechanism rotates along with the driving mechanism, and the brush arm is located at a first position in contact with the ground; the driving mechanism rotates in the second direction opposite to the first direction, the side brush mechanism rotates along with the driving mechanism, the speed adjusting assembly enables speed difference to be generated between the transmission part and the brush arm, and the brush arm moves to the second position separated from the ground relative to the transmission part in the direction away from the ground. The sweeping robot comprises the side brush device. According to the side brush device and the sweeping robot, the brush arm moves in the direction away from the ground relative to the transmission piece, and the probability that the brush arm is polluted by dirt in the form of cleaning liquid can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of intelligent robots, and particularly to a side brush device and a floor cleaning robot. Background Art

[0002] Currently, in floor cleaning robots, the floor cleaning robot uses a side brush device to clean the ground. However, most side brush devices are always in contact with the ground. When cleaning dirt in liquid form such as soy sauce and milk, it is easy to contaminate the side brush device, and when the robot passes over the ground after cleaning, the side brush device in contact with the ground is likely to contaminate the cleaned ground, affecting the cleaning effect of the ground. Summary of the Utility Model

[0003] Based on this, it is necessary to provide a side brush device and a floor cleaning robot for the problem that the side brush device is easily contaminated when cleaning the ground.

[0004] A side brush device includes:

[0005] A driving mechanism;

[0006] A side brush mechanism, including a brush arm, a speed regulation component and a transmission member. The transmission member is in transmission connection with the driving mechanism. The brush arm is movably connected to the transmission member. The speed regulation component is connected to the transmission member and is used to change the speed of the transmission member;

[0007] Wherein, the driving mechanism rotates around a first direction, the side brush mechanism rotates with the driving mechanism, and the brush arm is located at a first position in contact with the ground; the driving mechanism rotates around a second direction opposite to the first direction, the side brush mechanism rotates with the driving mechanism, and the speed regulation component causes a speed difference between the transmission member and the brush arm, and the brush arm moves away from the ground relative to the transmission member to a second position separated from the ground.

[0008] For the above side brush device, when the driving mechanism rotates around the first direction, the side brush mechanism rotates with the driving mechanism, and the brush arm is always in contact with the ground, which can enable the brush arm to clean the ground normally; when the driving mechanism rotates around a second direction opposite to the first direction, the brush arm moves away from the ground relative to the transmission member, that is, the brush arm is lifted to be separated from the ground, which can reduce the probability of the brush arm being contaminated by cleaning dirt in liquid form (such as soy sauce and milk), and improve the situation of secondary contamination of the cleaned ground due to the contamination of the brush arm.

[0009] In one embodiment, when the driving mechanism rotates around the second direction, the side brush mechanism rotates with the driving mechanism, and at the same time, the side brush mechanism moves away from the ground.

[0010] In one embodiment, the speed regulation assembly includes an elastic member and a mating member. The mating member is coupled to the transmission member. The first fixed end of the elastic member is fixed to the mating member, and the second fixed end of the elastic member is fixed to the transmission member. The drive mechanism rotates about the second direction, the side brush mechanism moves away from the ground, and the mating member remains stationary after being in the locked position.

[0011] In one embodiment, the intermediate section of the elastic member between the first fixed end and the second fixed end is wound around the outer periphery of the transmission member. When the mating member remains stationary after being in the locked position, the intermediate section is in an energy storage state and is used to generate a speed difference between the transmission member and the brush arm.

[0012] In one embodiment, the mating member has a cavity. The transmission member and the elastic member are received in the cavity. The brush arm is movably connected to the transmission member and at least partially extends out of the cavity.

[0013] In one embodiment, a limiting groove is provided in the cavity. A limiting rib protrudes from the groove wall of the limiting groove. At least a part of the brush arm is inserted into the limiting groove and abuts against the limiting rib.

[0014] In one embodiment, the mating member has a first locking portion, and the drive mechanism has a second locking portion. When the mating member remains stationary after being in the locked position, the first locking portion is locked with the second locking portion.

[0015] In one embodiment, one of the first locking portion and the second locking portion is a protrusion, and the other of the first locking portion and the second locking portion is a groove.

[0016] In one embodiment, the mating member has a first limiting portion, and the transmission member has a second limiting portion. When the drive mechanism rotates about the first direction, the second limiting portion is limited and fixed to the first limiting portion. When the drive mechanism rotates about the second direction and the mating member is in the locked position, the second limiting portion is separated from the first limiting portion.

[0017] In one embodiment, one of the first limiting portion and the second limiting portion is a protrusion, and the other of the first limiting portion and the second limiting portion is a groove.

[0018] In one embodiment, a spiral groove that rotates about its own central axis is provided on the transmission member. The spiral groove has a first end and a second end with a height lower than that of the first end. The brush arm is provided with a protruding portion that is engaged with the spiral groove. The drive mechanism rotates in the first direction, and the protruding portion is always located at the second end, so that the brush arm is located at the first position. The drive mechanism rotates in the second direction, and the protruding portion moves from the second end to the first end, so that the brush arm is located at the second position.

[0019] In one embodiment, the number of the spiral grooves and the brush arms is at least two, and at least one spiral groove is correspondingly provided for each brush arm. The spiral grooves are evenly distributed on the circumferential side of the transmission member around the central axis of the transmission member.

[0020] In one embodiment, the brush arm includes a connecting arm and a brush. The brush is provided at one end of the connecting arm, and the protruding portion protrudes from the end of the connecting arm away from the brush.

[0021] In one embodiment, the drive mechanism includes a drive member, a first gear, and a second gear. The second gear is fixedly connected to the transmission member. The second gear and the first gear are helically meshed. The drive member is connected to the first gear. Wherein, when the drive member rotates in the first direction, the first gear rotates, meshing and driving the second gear to rotate, and the side brush mechanism rotates with the second gear. When the drive member rotates in the second direction, the first gear rotates, meshing and driving the second gear to rotate and move in a direction away from the ground, and the side brush mechanism rotates with the second gear and moves in a direction away from the ground.

[0022] In one embodiment, a transmission fixing groove engaged with the second gear is provided on the top side of the transmission member.

[0023] A floor sweeping robot includes the above-mentioned side brush device.

[0024] For the above-mentioned floor sweeping robot, the brush arm can move in a direction away from the ground relative to the transmission member, that is, the brush arm is lifted to be separated from the ground, which can reduce the probability of the brush arm being contaminated by dirt in the form of liquid (such as soy sauce, milk), and improve the situation of secondary contamination of the cleaned ground due to the contamination of the brush arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a cross-sectional view of the side brush device in some embodiments, in which the brush arm is located at the first position.

[0026] Figure 2 It is a cross-sectional view of the side brush device in some embodiments, in which the brush arm is located at the second position.

[0027] Figure 3 For Figure 2 the partial enlarged view at A of the side brush device shown

[0028] Figure 4 is the axonometric view of the side brush mechanism in some embodiments, where the brush arm is in the first position

[0029] Figure 5 is the axonometric view of the side brush mechanism in some embodiments, where the brush arm is in the second position

[0030] Figure 6 is the exploded view of the side brush mechanism in some embodiments

[0031] Figure 7 For Figure 6 the schematic view of the transmission part in the side brush mechanism shown

[0032] Figure 8 For Figure 6 the schematic view of the mating part in the side brush mechanism shown

[0033] Reference numerals:

[0034] 10. Driving mechanism; 11. Driving part; 12. First gear; 13. Second gear; 14. Gearbox; 20. Side brush mechanism; 300. Brush arm; 301. Protruding part; 310. Connecting arm; 320. Brush; 400. Speed regulation assembly; 410. Elastic part; 420. Mating part; 420a. First mating part; 420b. Second mating part; 421. Cavity; 422. Limiting groove; 423. Limiting rib; 424. First locking part; 425. First limiting part; 426. First clamping groove; 500. Transmission part; 510. Second limiting part; 520. Spiral groove; 521. First end; 522. Second end; 530. Transmission fixing groove; 540. Second clamping groove; 550. Fastener Detailed implementation manners

[0035] To make the above objects, features and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below

[0036] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present application.

[0037] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0038] In the present application, unless otherwise clearly specified and limited, the terms "initial", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0039] In the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0040] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0041] Please refer to Figure 1 , in one embodiment, the side brush device includes a driving mechanism 10 and a side brush mechanism 20. The side brush mechanism 20 includes a brush arm 300, a speed regulation component 400 and a transmission member 500. The transmission member 500 is in transmission connection with the driving mechanism 10. The brush arm 300 is movably connected to the transmission member 500. The speed regulation component 400 is connected to the transmission member 500 and is used to change the speed of the transmission member 500;

[0042] Among them, referring to Figure 1 , the driving mechanism 10 rotates around a first direction, the side brush mechanism 20 rotates with the driving mechanism 10, and the brush arm 300 is located at a first position in contact with the ground; referring to Figure 2 and Figure 3 , the driving mechanism 10 rotates around a second direction opposite to the first direction, the side brush mechanism 20 rotates with the driving mechanism 10, the speed regulation component 400 causes a speed difference between the transmission member 500 and the brush arm 300, and the brush arm 300 moves away from the ground relative to the transmission member 500 to a second position separated from the ground.

[0043] It should be noted that the side brush device is applied to an intelligent floor cleaning device (such as a floor sweeping robot), and the side brush device is used to clean the ground. When the intelligent floor cleaning device is in the cleaning state, the brush arm 300 needs to be in contact with the ground to clean the ground; when the intelligent floor cleaning device is in a non-cleaning state (such as a mopping state), the brush arm 300 needs to be away from the ground to improve the situation where the brush arm 300 is contaminated by dirt in the form of liquid (such as soy sauce, milk).

[0044] Combined with reference to Figure 1 and Figure 4 , when the driving mechanism 10 rotates around the first direction, under the driving action of the transmission member 500, the entire side brush mechanism 20 rotates with the driving mechanism 10, and the brush arm 300 is always located at the first position; combined with reference to Figure 2 and Figure 5, when the driving mechanism 10 rotates in a second direction opposite to the first direction, under the driving action of the transmission member 500, the entire side brush mechanism 20 rotates with the driving mechanism 10. At this time, the speed regulation component 400 generates a speed difference between the transmission member 500 and the brush arm 300, so that the brush arm 300 moves away from the ground relative to the transmission member 500 until the brush arm 300 moves to a second position separated from the ground.

[0045] For the above side brush device, when the driving mechanism 10 rotates in the first direction, the side brush mechanism 20 rotates with the driving mechanism 10, and the brush arm 300 always contacts the ground, enabling the brush arm 300 to clean the ground normally; when the driving mechanism 10 rotates in a second direction opposite to the first direction, the brush arm 300 moves away from the ground relative to the transmission member 500, that is, the brush arm 300 is lifted to be separated from the ground, which can reduce the probability of the brush arm 300 being contaminated by liquid dirt (such as soy sauce and milk), and improve the situation of secondary contamination of the cleaned ground due to the contamination of the brush arm 300.

[0046] In this embodiment, the first direction can be either the clockwise direction or the counterclockwise direction. For example, when the first direction is the clockwise direction, the second direction is the counterclockwise direction; when the first direction is the counterclockwise direction, the second direction is the clockwise direction.

[0047] In this embodiment, the transmission member 500 is in transmission connection with the driving mechanism 10, that is: the transmission member 500 is connected to a certain component of the driving mechanism 10, and the transmission member 500 can rotate and / or move under the drive of the driving mechanism 10.

[0048] In this embodiment, the speed regulation component 400 can not only be a component for changing the speed of the transmission member 500, but also can be used as a component in the appearance structure of the side brush mechanism 20, that is, the speed regulation component 400 has both the function of changing the speed of the transmission member 500 and the function of forming the appearance structure.

[0049] Furthermore, please refer to Figure 2 and Figure 3 , when the driving mechanism 10 rotates in the second direction, the side brush mechanism 20 rotates with the driving mechanism 10, and at the same time the side brush mechanism 20 moves away from the ground.

[0050] It should be noted here that when the driving mechanism 10 rotates in the second direction, under the driving action of the transmission member 500, the entire side brush mechanism 20 rotates with the driving mechanism 10. In addition to the brush arm 300 moving away from the ground relative to the transmission member 500 to lift the brush arm 300 itself; at the same time, the entire side brush mechanism 20 also moves away from the ground to lift the entire side brush mechanism 20, thereby further significantly lifting the brush arm 300.

[0051] Specifically, please refer to Figure 6 , the speed adjustment assembly 400 includes an elastic member 410 and a mating member 420. The mating member 420 is connected to the transmission member 500. The first fixed end of the elastic member 410 is fixed to the mating member 420, and the second fixed end of the elastic member 410 is fixed to the transmission member 500. When the driving mechanism 10 rotates in the second direction, the side brush mechanism 20 moves away from the ground, and the mating member 420 remains stationary after being in the locked position.

[0052] It can be understood that since one fixed end of the elastic member 410 is fixed to the mating member 420 and the other fixed end of the elastic member 410 is fixed to the transmission member 500, when the driving mechanism 10 rotates in the first direction, the entire side brush mechanism 20 rotates with the driving mechanism 10, and the elastic member 410 is in a state with a smaller compression angle, and the torque generated by the elastic member 410 is smaller. When the driving mechanism 10 rotates in the second direction, the elastic member 410 is in a state with a larger compression angle, and the torque generated by the elastic member 410 is larger, and the elastic member 410 gradually stores energy.

[0053] In this embodiment, referring to Figure 6 and Figure 7 , a first clamping groove 426 is provided in the mating member 420, and the first fixed end of the elastic member 410 is fixed in the first clamping groove 426. A second clamping groove 540 is provided on the transmission member 500, and the second fixed end of the elastic member 410 is fixed in the second clamping groove 540.

[0054] In this embodiment, the mating member 420 and the transmission member 500 can be connected in various structural forms, such as plug connection, snap connection or other assembly forms, which are not specifically limited herein.

[0055] In this embodiment, the elastic member 410 is a torsion spring. The number of the elastic members 410 is not limited to one. When the number of the elastic members 410 is at least two, the elastic members 410 can be arranged side by side in the same direction or in other arrangements. In other embodiments, the elastic member 410 can also be a spring sheet or other members that can undergo elastic deformation.

[0056] More specifically, please refer to Figure 6 , the middle section of the elastic member 410 between the first fixed end and the second fixed end is wound around the outer periphery of the transmission member 500. When the mating member 420 remains stationary after being in the locked position, the middle section is in an energy storage state and is used to generate a speed difference between the transmission member 500 and the brush arm 300.

[0057] It should be noted that when the fitting 420 is stationary after being in the locked position and the driving mechanism 10 rotates in the second direction, the transmission member 500 will rotate along with the driving mechanism 10. Since the fitting 420 is stationary at this time, the elastic member 410 is in a state with a relatively large compression angle, and the torque generated by the elastic member 410 is relatively large. The elastic member 410 gradually stores energy and creates a speed difference between the transmission member 500 and the brush arm 300, so that the brush arm 300 moves away from the ground relative to the transmission member 500 until the brush arm 300 moves to the second position separated from the ground.

[0058] In addition, when the driving mechanism 10 rotates in the first direction, the torque of the elastic member 410 gradually decreases, which will cause the transmission member 500 and the fitting 420 to rotate relative to each other, and the brush arm 300 can return from the second position to the first position.

[0059] In this embodiment, the middle section of the elastic member 410 is wound around the outer periphery of the transmission member 500, and the middle section of the elastic member 410 is closely attached to the outer periphery of the transmission member 500. Further, a receiving groove can be provided on the outer periphery of the transmission member 500 to limit the middle section of the elastic member 410 in the receiving groove.

[0060] Please refer to Figure 6 and Figure 2 , the fitting 420 has a cavity 421, the transmission member 500 and the elastic member 410 are received in the cavity 421, and the brush arm 300 is movably connected to the transmission member 500 and at least partially extends out of the cavity 421.

[0061] It should be noted that one end of the brush arm 300 is received in the cavity 421 and is movably connected to the transmission member 500, and the other end of the brush arm 300 at least partially extends out of the cavity 421 to facilitate the brush arm 300 to clean the ground.

[0062] Specifically, referring to Figure 8 , as a component in the appearance structure of the side brush mechanism 20, the fitting 420 includes a first fitting portion 420a and a second fitting portion 420b, and the first fitting portion 420a and the second fitting portion 420b cover each other to form the cavity 421. Among them, the first fitting portion 420a and the second fitting portion 420b can be of an integral structure, for example, integrally formed by injection molding or casting, with good integrity and high structural strength; or, the first fitting portion 420a and the second fitting portion 420b can also be of a split structure, for example, fixed by plugging, clamping or screwing.

[0063] In this embodiment, the fitting 420 is cylindrical, and correspondingly, the cavity 421 is also a cylindrical cavity. In other embodiments, the fitting 420 can also be prismatic or other irregular shapes, and correspondingly, the cavity 421 is also a prismatic cavity or a cavity with other irregular shapes.

[0064] Further, please refer to Figure 8 , a limiting groove 422 is provided in the cavity 421, and a limiting rib 423 protrudes from the groove wall of the limiting groove 422. At least a part of the brush arm 300 is inserted into the limiting groove 422 and abuts against the limiting rib 423.

[0065] It can be understood that one end of the brush arm 300 is received in the cavity 421 and is movably connected to the transmission member 500. The part of the brush arm 300 received in the cavity 421 is inserted into the limiting groove 422 and abuts against the limiting rib 423. In this way, the part of the brush arm 300 received in the cavity 421 is limited by the limiting groove 422, and at the same time, it can prevent the brush arm 300 from directly contacting the groove wall of the limiting groove 422 and generating hard friction.

[0066] In this embodiment, the part of the brush arm 300 received in the cavity 421 is cylindrical. Correspondingly, the limiting groove 422 is also a cylindrical groove. In other embodiments, the part of the brush arm 300 received in the cavity 421 can also be prismatic or other irregular shapes. Correspondingly, the limiting groove 422 is also prismatic or other irregular shapes.

[0067] In this embodiment, the limiting rib 423 protrudes from the groove wall of the limiting groove 422, and the shape of the limiting rib 423 is adapted to the shape of the limiting groove 422. The number of the limiting ribs 423 is not limited to one. When the number of the limiting ribs 423 is at least two, the limiting ribs 423 can be arranged side by side and spaced apart in the limiting groove 422.

[0068] Please refer to Figure 8 and Figure 2 , the fitting 420 has a first locking portion 424, and the driving mechanism 10 has a second locking portion; when the fitting 420 is stationary after being in the locking position, the first locking portion 424 is locked with the second locking portion.

[0069] It should be noted that when the fitting 420 is in the non-locking position, the first locking portion 424 is separated from the second locking portion. At this time, the fitting 420 can move; when the fitting 420 is in the locking position, the first locking portion 424 is locked with the second locking portion. At this time, the fitting 420 is stationary.

[0070] In this embodiment, the first locking portion 424 and the second locking portion can be locked and unlocked with each other. The structural form of the first locking portion 424 and the second locking portion can be a concave-convex fit or a plug-in fit. The structural form of the first locking portion 424 and the second locking portion is not limited herein.

[0071] In this embodiment, the number of the first locking portion 424 and the second locking portion is not limited to one. The number of the first locking portion 424 and the second locking portion can be at least two, and the first locking portion 424 and the second locking portion are arranged in correspondence.

[0072] Specifically in this embodiment, please refer to Figure 8 and Figure 2 , one of the first locking portion 424 and the second locking portion is a protrusion, and the other of the first locking portion 424 and the second locking portion is a groove.

[0073] For example, when the first locking portion 424 is a protrusion and the second locking portion is a groove, when the fitting 420 is in the non-locked position, the protrusion and the groove are separated; when the fitting 420 is in the locked position, the protrusion and the groove are locked together.

[0074] In this embodiment, the protrusion can be cylindrical, wedge-shaped or other irregular shapes. Correspondingly, the groove is cylindrical, wedge-shaped or other irregular shapes. The shapes of the protrusion and the groove are not specifically limited herein.

[0075] In this embodiment, the number of the protrusions and the grooves is not limited to one. The number of the protrusions and the grooves can be at least two, and the protrusions and the grooves are arranged correspondingly.

[0076] Please refer to Figure 7 and Figure 8 , the fitting 420 has a first limiting portion 425, and the transmission member 500 has a second limiting portion 510; when the driving mechanism 10 rotates around the first direction, the second limiting portion 510 is limited and fixed to the first limiting portion 425; when the driving mechanism 10 rotates around the second direction and the fitting 420 is in the locked position, the second limiting portion 510 is separated from the first limiting portion 425.

[0077] It can be understood that when the driving mechanism 10 rotates around the first direction, the fitting 420 and the transmission member 500 rotate together with the driving mechanism 10 as a whole. At this time, the second limiting portion 510 is limited and fixed to the first limiting portion 425 so that the fitting 420 and the transmission member 500 move together as a whole; when the driving mechanism 10 rotates around the second direction and the fitting 420 is in the locked position, the fitting 420 remains stationary and the transmission member 500 rotates with the driving mechanism 10. At this time, the second limiting portion 510 is separated from the first limiting portion 425 to prevent the fitting 420 from hindering the movement of the transmission member 500.

[0078] In this embodiment, the first limiting portion 425 and the second limiting portion 510 can be mutually limited and matched. The structural forms of the first limiting portion 425 and the second limiting portion 510 can be concave-convex matching or plug-in matching. The structural forms of the first limiting portion 425 and the second limiting portion 510 are not limited herein.

[0079] In this embodiment, the number of the first limiting part 425 and the second limiting part 510 is not limited to one. The number of the first limiting part 425 and the second limiting part 510 can be at least two, and the first limiting part 425 and the second limiting part 510 are arranged correspondingly.

[0080] Specifically in this embodiment, please refer to Figure 7 and Figure 8 , one of the first limiting part 425 and the second limiting part 510 is a protrusion, and the other of the first limiting part 425 and the second limiting part 510 is a groove.

[0081] For example, when the first limiting part 425 is a protrusion and the second limiting part 510 is a groove, when the fitting 420 is in the non-locking position, the protrusion and the groove are separated; when the fitting 420 is in the locking position, the protrusion and the groove are locked.

[0082] In this embodiment, the protrusion can be cylindrical, wedge-shaped or other irregular shapes. Correspondingly, the groove is cylindrical, wedge-shaped or other irregular shapes. The shapes of the protrusion and the groove are not specifically limited herein.

[0083] In this embodiment, the number of the protrusion and the groove is not limited to one. The number of the protrusion and the groove can be at least two, and the protrusion and the groove are arranged correspondingly.

[0084] Please refer to Figure 7 , a spiral groove 520 that rotates around its own central axis is provided on the transmission member 500. The spiral groove 520 has a first end 521 and a second end 522 with a height lower than that of the first end 521. The brush arm 300 is provided with an extension 301 that is engaged with the spiral groove 520; when the driving mechanism 10 rotates around the first direction, the extension 301 is always located at the second end 522, so that the brush arm 300 is located at the first position; when the driving mechanism 10 rotates around the second direction, the extension 301 moves from the second end 522 to the first end 521, so that the brush arm 300 is located at the second position.

[0085] It should be noted that the central axis of the transmission member 500 extends along the Figure 7 X direction shown. When the driving mechanism 10 rotates around the first direction, the side brush mechanism 20 rotates integrally with the driving mechanism 10, the extension 301 is always located at the second end 522, and the brush arm 300 is always located at the first position; when the driving mechanism 10 rotates around the second direction opposite to the first direction, the side brush mechanism 20 rotates integrally with the driving mechanism 10. At this time, the speed regulating assembly 400 generates a speed difference between the transmission member 500 and the brush arm 300, so that the brush arm 300 moves away from the ground relative to the transmission member 500, and the extension 301 moves from the second end 522 to the first end 521, so that the brush arm 300 moves to the second position separated from the ground.

[0086] In this embodiment, the protruding portion 301 is cylindrical, and the groove wall of the spiral groove 520 is a smooth surface to facilitate the sliding movement of the protruding portion 301 within the spiral groove 520. In other embodiments, the protruding portion 301 may also be elliptical cylindrical or of other shapes.

[0087] In this embodiment, the number of the protruding portions 301 is not limited to one. When the number of the protruding portions 301 is at least two, the protruding portions 301 are spaced apart along the extending direction of the brush arm 300.

[0088] Specifically, please refer to Figure 7 , both the number of the spiral grooves 520 and the number of the brush arms 300 are at least two, and at least one spiral groove 520 is correspondingly provided for each brush arm 300. The spiral grooves 520 are uniformly distributed on the circumferential side of the transmission member 500 around the central axis of the transmission member 500.

[0089] In this embodiment, both the number of the spiral grooves 520 and the number of the brush arms 300 are at least two, and the spiral grooves 520 and the brush arms 300 are arranged in one-to-one correspondence, that is, one spiral groove 520 is correspondingly provided for each brush arm 300, so as to improve the cleaning efficiency of the brush arm 300.

[0090] Specifically, please refer to Figure 6 , the brush arm 300 includes a connecting arm 310 and a brush 320. The brush 320 is arranged at one end of the connecting arm 310, and the protruding portion 301 protrudes from the end of the connecting arm 310 away from the brush 320.

[0091] It can be understood that the brush 320 and the protruding portion 301 are respectively located at both ends of the connecting arm 310, which can not only clean the ground but also prevent the brush arm 300 from being lifted.

[0092] In this embodiment, the connecting arm 310 is made of plastic, and the brush 320 is made of an elastic material such as rubber. The elastic material and the plastic can be fixed by insert injection molding. In other embodiments, the connecting arm 310 and the brush 320 can also be made of other materials and manufactured by other processes.

[0093] Please refer to Figure 2 , the driving mechanism 10 includes a driving member 11, a first gear 12 and a second gear 13. The second gear 13 is fixedly connected to the transmission member 500. The second gear 13 and the first gear 12 are helically meshed. The driving member 11 is connected to the first gear 12. Wherein, the driving member 11 rotates around the first direction, the first gear 12 rotates, meshing and driving the second gear 13 to rotate, and the side brush mechanism 20 rotates with the second gear 13. The driving member 11 rotates around the second direction, the first gear 12 rotates, meshing and driving the second gear 13 to rotate and move in a direction away from the ground, and the side brush mechanism 20 rotates with the second gear 13 and moves in a direction away from the ground.

[0094] It should be noted that when the driving member 11 rotates in the first direction, the first gear 12 rotates, meshes with and drives the second gear 13 to rotate, and the whole side brush mechanism 20 rotates with the second gear 13. At this time, the side brush mechanism 20 is not lifted; when the driving member 11 rotates in the second direction, the first gear 12 rotates, meshes with and drives the second gear 13 to rotate and move away from the ground, and the side brush mechanism 20 rotates with the second gear 13 and moves away from the ground. At this time, the side brush mechanism 20 is lifted.

[0095] In this embodiment, the driving member 11 is a motor, and the output shaft of the motor is fixedly connected to the first gear 12. In other embodiments, the driving member 11 may also have other driving structures with power output shafts.

[0096] In this embodiment, the number of the first gears 12 and the second gears 13 is not limited to one. The first gears 12 and the second gears 13 are helical gears meshing with each other, and the first gears 12 and the second gears 13 form a gear set to play a role in speed change. Optionally, both the first gear 12 and the second gear 13 are received in the gear box 14.

[0097] In this embodiment, the fastener 550 passes through the second gear 13 and the transmission member 500 to fixedly connect the second gear 13 and the transmission member 500. Optionally, the fastener 550 is a screw or a bolt.

[0098] Further, please refer to Figure 7 , a transmission fixing groove 530 adapted to the second gear 13 is provided on the top side of the transmission member 500.

[0099] It should be noted here that the axle of the second gear 13 is inserted into the transmission fixing groove 530. When the second gear 13 rotates and moves, it can drive the transmission member 500 to rotate and move.

[0100] In this embodiment, the transmission fixing groove 530 is a hexagonal prism groove to be adapted to the axle of the second gear 13. In other embodiments, the transmission fixing groove 530 may also be in other shapes.

[0101] Please refer to Figure 1 , a floor cleaning robot in an embodiment includes the above side brush device.

[0102] It should be noted that in addition to including the above side brush device, the floor cleaning robot further includes other components such as a mopping device and a control device.

[0103] For the above floor cleaning robot, the brush arm can move away from the ground relative to the transmission member, which can reduce the probability of the brush arm being contaminated by dirt in the form of liquid (such as soy sauce and milk), and improve the situation of secondary contamination of the cleaned ground due to the contamination of the brush arm.

[0104] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0105] The above-described embodiments only express several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A side brush device, characterized in that: include: A driving mechanism (10); A side brush mechanism (20) comprising a brush arm (300), a speed regulating assembly (400) and a transmission member (500), wherein the transmission member (500) is in transmission connection with the driving mechanism (10), the brush arm (300) is movably connected to the transmission member (500), and the speed regulating assembly (400) is matched with the transmission member (500) and is used to change the speed of the transmission member (500); The driving mechanism (10) rotates in a first direction, the side brush mechanism (20) rotates along with the driving mechanism (10), and the brush arm (300) is located at a first position in contact with the ground; The driving mechanism (10) rotates in a second direction opposite to the first direction, the side brush mechanism (20) rotates along with the driving mechanism (10), the speed regulating assembly (400) causes a speed difference to be generated between the transmission member (500) and the brush arm (300), and the brush arm (300) moves relative to the transmission member (500) in a direction away from the ground to a second position separated from the ground.

2. The side brush device according to claim 1, characterized in that: The driving mechanism (10) rotates about the second direction, and the side brush mechanism (20) rotates along with the driving mechanism (10), while the side brush mechanism (20) moves in a direction away from the ground.

3. The side brush device according to claim 2, characterized in that: The speed regulating assembly (400) comprises an elastic member (410) and a matching member (420), the matching member (420) being matched with the transmission member (500), a first fixed end of the elastic member (410) being fixed to the matching member (420), and a second fixed end of the elastic member (410) being fixed to the transmission member (500); The driving mechanism (10) rotates about the second direction, the side brush mechanism (20) moves in a direction away from the ground, and the matching component (420) remains stationary after being located in the locked position.

4. The side brush device according to claim 3, characterized in that: The elastic member (410) is located at a middle section between the first fixed end and the second fixed end and is arranged around the outer circumference of the transmission member (500); When the matching member (420) is located at a locked position and is stationary, the middle section is in an energy storage state and is used to generate a speed difference between the transmission member (500) and the brush arm (300).

5. The side brush device according to claim 3, characterized in that: The matching member (420) has a cavity (421), the transmission member (500) and the elastic member (410) are accommodated in the cavity (421), and the brush arm (300) is movably connected to the transmission member (500) and at least partially extends out of the cavity (421).

6. The side brush device according to claim 5, characterized in that: A limiting groove (422) is provided in the containing cavity (421), a limiting rib (423) is convexly provided on the groove wall of the limiting groove (422), and the brush arm (300) is at least partially inserted in the limiting groove (422) and abuts against the limiting rib (423).

7. The side brush device according to claim 3, characterized in that: The matching piece (420) has a first locking portion (424), and the driving mechanism (10) has a second locking portion; When the matching piece (420) is located at the locking position and is stationary, the first locking portion (424) is locked with the second locking portion.

8. The side brush device according to claim 7, characterized in that: One of the first locking portion (424) and the second locking portion is a protrusion, and the other of the first locking portion (424) and the second locking portion is a groove.

9. The side brush device according to claim 3, characterized in that: The matching member (420) has a first limiting portion (425), and the transmission member (500) has a second limiting portion (510); When the driving mechanism (10) rotates about the first direction, the second limiting portion (510) is limited and fixed to the first limiting portion (425); when the driving mechanism (10) rotates about the second direction and the matching member (420) is located in the locking position, the second limiting portion (510) is separated from the first limiting portion (425).

10. The side brush device according to claim 9, characterized in that: One of the first limiting portion (425) and the second limiting portion (510) is a protrusion, and the other of the first limiting portion (425) and the second limiting portion (510) is a groove.

11. The side brush device according to claim 1, characterized in that: The transmission member (500) is provided with a spiral groove (520) that rotates around its own central axis, the spiral groove (520) having a first end (521) and a second end (522) whose height is lower than the first end (521), and the brush arm (300) is provided with a protruding portion (301) that is matched with the spiral groove (520); The driving mechanism (10) rotates about the first direction, and the extension portion (301) is always located at the second end (522), so that the brush arm (300) is located at the first position; the driving mechanism (10) rotates about the second direction, and the extension portion (301) moves from the second end (522) to the first end (521), so that the brush arm (300) is located at the second position.

12. The side brush device according to claim 11, characterized in that: The number of the spiral grooves (520) and the number of the brush arms (300) are both at least two, and each brush arm (300) is correspondingly provided with at least one spiral groove (520), and the spiral grooves (520) are evenly distributed on the circumference of the transmission member (500) around the central axis of the transmission member (500).

13. The side brush device according to claim 11, characterized in that: The brush arm (300) comprises a connecting arm (310) and a brush (320); the brush (320) is arranged at one end of the connecting arm (310); and the extension portion (301) is protrudingly arranged at one end of the connecting arm (310) away from the brush (320).

14. The side brush device according to claim 1, characterized in that: The driving mechanism (10) comprises a driving member (11), a first gear (12) and a second gear (13); the second gear (13) is fixedly connected to the transmission member (500); the second gear (13) and the first gear (12) are helical meshing members; and the driving member (11) is connected to the first gear (12); Wherein, the driving member (11) rotates in a first direction, the first gear (12) rotates, meshing and driving the second gear (13) to rotate, and the side brush mechanism (20) rotates along with the second gear (13); The driving member (11) rotates in the second direction, the first gear (12) rotates, meshing and driving the second gear (13) to rotate and move in a direction away from the ground, and the side brush mechanism (20) rotates with the second gear (13) and moves in a direction away from the ground.

15. The side brush device according to claim 14, characterized in that: A transmission fixing groove (530) matched with the second gear (13) is provided on the top side of the transmission member (500).

16. A sweeping robot, characterized in that: It comprises a side brush device as described in any one of claims 1-15.

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