Sweeping robot

Abstract

The utility model relates to a floor sweeping robot which comprises a machine shell provided with a containing groove; the side brush device is installed on the machine shell, the side brush device comprises a brush arm assembly, and the brush arm assembly is configured to be capable of being switched between a descending state and a lifting state; wherein the accommodating groove is provided with an opening communicated with the outside, and a first guide surface is arranged at the opening; under the condition that the brush arm assembly is in the lifting state, at least part of the brush arm assembly can elastically deform, so that the brush arm assembly can be rolled into the containing groove under radial guiding of the first guiding face. According to the sweeping robot, under the condition that the brush arm assembly is in the lifting state, the brush arm assembly is lifted to be separated from the ground, meanwhile, the brush arm assembly can be rolled into the containing groove, and the probability that the brush arm assembly is polluted by dirt in the form of cleaning liquid can be further reduced; and the condition that the cleaned ground is secondarily polluted after the brush arm assembly is polluted is improved.

Description

Technical Field

[0001] This application relates to the technical field of intelligent robots, and particularly to 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. Moreover, 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. For this reason, there have emerged floor cleaning robots with a side brush device that can be lifted. However, the effect of lifting the side brush device is not good. Due to the certain length of the brush arm assembly of the side brush device, the brush arm assembly will still contact the ground, and the brush arm assembly is likely to cause secondary pollution to the cleaned ground. Summary of the Utility Model

[0003] Based on this, in view of the problem of poor lifting effect and easy contamination of the brush arm assembly in the side brush device, it is necessary to provide a floor cleaning robot.

[0004] A floor cleaning robot, comprising:

[0005] A housing provided with a receiving groove;

[0006] A side brush device installed on the housing, the side brush device including a brush arm assembly configured to be able to switch between a lowered state and a lifted state;

[0007] Wherein, the receiving groove has an opening communicating with the outside, and a first guiding surface is provided at the opening; in the case where the brush arm assembly is in the lifted state, at least a part of the brush arm assembly can undergo elastic deformation so that the brush arm assembly can be wound into the receiving groove under the radial guiding of the first guiding surface.

[0008] For the above floor cleaning robot, in the case where the brush arm assembly is in the lifted state, the brush arm assembly is lifted away from the ground, and at the same time, the brush arm assembly can be wound into the receiving groove, which can further reduce the probability of the side brush device being contaminated by cleaning dirt in liquid form, and improve the situation of secondary contamination of the cleaned ground due to the contamination of the brush arm assembly.

[0009] In one embodiment, the receiving groove has a bottom wall and a side wall surrounding the bottom wall, and the first guiding surface is configured as an inclined surface provided at one end of the side wall.

[0010] In one embodiment, the depth of the side wall is greater than or equal to the thickness of the brush arm assembly.

[0011] In one embodiment, a buffer surface is further provided at the opening. The buffer surface is opposite to and spaced from the first guiding surface, and the buffer surface is configured as an inclined surface provided at the other end of the groove side wall. When the brush arm assembly switches to the descending state, the brush arm assembly can gradually extend out of the accommodating groove under the buffering of the buffer surface.

[0012] In one embodiment, the diameter of the accommodating groove is smaller than the extension diameter of the brush arm assembly.

[0013] In one embodiment, the machine housing is further provided with a guiding groove communicating with the accommodating groove. The guiding groove is located below the accommodating groove in the axial direction of the machine housing, and the guiding groove has a second guiding surface. When the brush arm assembly is in the lifted state, the brush arm assembly can be wound into the accommodating groove under the axial guiding of the second guiding surface.

[0014] In one embodiment, the second guiding surface is configured as an inclined surface circumferentially arranged along the guiding groove.

[0015] In one embodiment, the side brush device further includes a side brush housing, and the brush arm assembly penetrates through the side brush housing. When the brush arm assembly is in the lifted state, the side brush housing rotates relative to the brush arm assembly, so that the brush arm assembly rotates relative to the accommodating groove and is wound into the accommodating groove.

[0016] In one embodiment, the center of the accommodating groove and the rotation center of the side brush housing are eccentrically arranged.

[0017] In one embodiment, the accommodating groove is configured as a spiral groove that gradually becomes smaller in the screwing-in direction of the brush arm assembly or gradually becomes larger in the screwing-out direction of the brush arm assembly.

[0018] In one embodiment, the center of the accommodating groove and the rotation center of the side brush housing overlap.

[0019] In one embodiment, the accommodating groove is configured as an arc groove centered on the rotation center of the side brush housing.

[0020] In one embodiment, the side brush device further includes a guiding member, a side brush transmission member, and a second gear. A cavity is provided inside the side brush housing. The second gear is fixed to the outer wall of the cavity. The guiding member protrudes from the inner wall of the cavity. The side brush transmission member is movably arranged inside the cavity and is fixedly connected to the brush arm assembly.

[0021] When the second gear rotates in the first direction, the guide member abuts against the brush arm assembly, and the brush arm assembly, the side brush transmission member, and the side brush housing rotate with the second gear, and the brush arm is in a lowered state;

[0022] When the second gear rotates in a second direction opposite to the first direction, the side brush transmission member is locked, the brush arm assembly does not rotate, the side brush housing rotates with the second gear, the guide member presses and folds the brush arm assembly downwards, and the brush arm assembly is in a lifted state.

[0023] In one embodiment, the guide member is provided with an abutting inclined surface along the axial direction of the cavity, and the brush arm assembly has a bent portion that can undergo elastic deformation; when the second gear rotates in the first direction, the abutting inclined surface abuts against the bent portion; when the second gear rotates in the second direction, the abutting inclined surface presses and folds the bent portion downwards to lift the brush arm assembly.

[0024] In one embodiment, the brush arm assembly includes a sleeved portion, a curved arm, and a hair bundle. The hair bundle and the bent portion are respectively fixed to two ends of the curved arm. The bent portion is fixedly connected to the sleeved portion, and the sleeved portion is sleeved and fixed on the side brush transmission member.

[0025] In one embodiment, the side brush device further includes an elastic member sleeved on the side brush transmission member. The first end of the elastic member is fixed to the side brush housing, and the second end of the elastic member is fixed to the side brush transmission member; when the second gear rotates in the second direction, the elastic member provides a torsional force and is in an energy storage state; when the second gear rotates in the first direction, through the torsional recovery of the elastic member, the brush arm assembly can be driven to fold and reset.

[0026] In one embodiment, the side brush device further includes a one-way transmission member and a transmission shaft. The transmission shaft is movably connected to the second gear, and the transmission shaft is respectively fixedly connected to the side brush transmission member and the one-way transmission member. The one-way transmission member is used to limit the transmission shaft to rotate only in one direction around the first direction.

[0027] In one embodiment, the side brush device further includes a rotary motion outputter and a gear box. The second gear and the one-way transmission member are both installed in the gear box, and the rotary motion outputter is in transmission connection with the second gear to drive the second gear to rotate through the rotary motion outputter. Brief Description of the Drawings

[0028] Figure 1Schematic diagram of the brush arm assembly in the down state in a floor cleaning robot in some embodiments.

[0029] Figure 2 It is Figure 1 The top view of the floor cleaning robot shown.

[0030] Figure 3 Schematic diagram of the brush arm assembly in the lifted state in a floor cleaning robot in some embodiments.

[0031] Figure 4 It is Figure 3 The top view of the floor cleaning robot shown.

[0032] Figure 5 It is Figure 4 The partial enlarged view of the A position of the floor cleaning robot shown.

[0033] Figure 6 It is Figure 3 The cross-sectional view of the housing in the floor cleaning robot shown.

[0034] Figure 7 Cross-sectional view of the side brush device in a floor cleaning robot in some embodiments.

[0035] Figure 8 It is Figure 7 The axonometric view of the side brush device shown.

[0036] Figure 9 It is Figure 7 The exploded view of the side brush device shown.

[0037] Figure 10 It is Figure 7 The schematic diagram of the side brush housing in the side brush device shown.

[0038] Figure 11 It is Figure 7 The schematic diagram of the brush arm assembly in the side brush device shown.

[0039] Reference numerals:

[0040] 100, housing; 110, accommodation groove; 110a, groove bottom wall; 110b, groove side wall; 111, opening; 112, first guiding surface; 113, buffer surface; 120, guiding groove; 121, second guiding surface; 200, side brush device; 210, brush arm assembly; 211, bending part; 212, sleeved part; 213, curved arm; 214, tuft; 220, side brush housing; 220a, first housing; 220b, second housing; 221, accommodation cavity; 230, guiding member; 231, abutting inclined surface; 240, side brush transmission member; 250, second gear; 260, elastic member; 270, one-way transmission member; 280, transmission shaft; 291, rotational motion output device; 292, gear box. Detailed implementation manners

[0041] To make the above objects, features, and advantages of the present application more apparent and understandable, the following provides a detailed description of the specific implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of 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.

[0042] In the description of the present application, it should be understood that 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. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These are only for facilitating the description of 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. Therefore, they should not be construed as limitations on the present application.

[0043] 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, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0044] In the present application, unless otherwise clearly specified and defined, terms such as "initial", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. 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.

[0045] In this application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply 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 mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature has a lower horizontal height than the second feature.

[0046] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also 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.

[0047] Please refer to Figures 1 to 4 , the floor cleaning robot in one embodiment includes a housing 100 and a side brush device 200. The housing 100 is provided with a receiving groove 110. The side brush device 200 is installed on the housing 100. The side brush device 200 includes a brush arm assembly 210, and the brush arm assembly 210 is configured to be able to switch between a lowered state and a lifted state. Among them, with combined reference to Figure 4 and Figure 5 , the receiving groove 110 has an opening 111 communicating with the outside, and a first guiding surface 112 is provided at the opening 111; when the brush arm assembly 210 is in the lifted state, the brush arm assembly 210 can slide radially along the first guiding surface 112 and move into the receiving groove 110.

[0048] It should be noted that in the floor cleaning robot, the side brush device 200 is used to clean the ground. Referring to Figure 1 and Figure 2 , when the floor cleaning robot is in the cleaning mode, the brush arm assembly 210 is in the lowered state, and the brush arm assembly 210 needs to contact the ground to clean the ground; referring to Figure 3 and Figure 4 , when the floor cleaning robot is in a non-cleaning mode (such as a mopping mode), the brush arm assembly 210 is in the lifted state, and the brush arm assembly 210 needs to be away from the ground to improve the situation that the brush arm assembly 210 is contaminated by dirt in the form of liquid during cleaning.

[0049] Here, when the brush arm assembly 210 is in the lifted state, the brush arm assembly 210 is away from the ground, and at the same time, under the radial guiding action of the first guiding surface 112, the brush arm assembly 210 slides from the opening 111 into the receiving groove 110.

[0050] For the above-mentioned floor sweeping robot, when the brush arm assembly 210 is in the lifted state, the brush arm assembly 210 is lifted away from the ground, and at the same time, the brush arm assembly 210 can be retracted into the receiving groove 110, which can further reduce the probability of the brush arm assembly 210 being contaminated by dirt in the form of liquid, and improve the situation of secondary contamination of the cleaned ground due to the contamination of the brush arm assembly 210.

[0051] In this embodiment, the housing 100 is a component in the appearance structure of the floor sweeping robot. The housing 100 can be an integrally formed structure or assembled from several parts, and the specific structural form of the housing 100 is not limited herein.

[0052] In this embodiment, the side brush device 200 is installed at the bottom of the housing 100. Correspondingly, the receiving groove 110 is provided at the bottom of the housing 100 to facilitate the brush arm assembly 210 to move away from or contact the ground when switching to different states.

[0053] In this embodiment, the opening 111 of the receiving groove 110 faces the outside and is in communication with the outside, so that the brush arm assembly 210 can be retracted and extended through the opening 111.

[0054] Specifically, please refer to Figures 4 to 6 , the receiving groove 110 has a groove bottom wall 110a and a groove side wall 110b surrounding the groove bottom wall 110a, and the first guiding surface 112 is configured as an inclined surface provided at one end of the groove side wall 110b.

[0055] It should be noted that during the process of the brush arm assembly 210 being lifted away from the ground, when the brush arm assembly 210 abuts against the groove side wall 110b, the brush arm assembly 210 will be bent and deformed and retracted towards the center of the receiving groove 110, so as to reduce the extended length of the brush arm assembly 210, so that the brush arm assembly 210 is retracted into the receiving groove 110.

[0056] In this embodiment, the groove bottom wall 110a and the groove side wall 110b are arranged at a 90-degree angle. In other embodiments, the groove bottom wall 110a and the groove side wall 110b can also be arranged at other angles.

[0057] In this embodiment, the groove bottom wall 110a is a planar structure, and the groove side wall 110b is an arc surface structure to facilitate the retraction of the brush arm assembly 210. In other embodiments, the groove bottom wall 110a can also be an arc surface structure.

[0058] Specifically in this embodiment, please refer to Figure 5 , the depth of the groove side wall 110b is greater than or equal to the thickness of the brush arm assembly 210.

[0059] Here, the depth of the accommodation groove 110 is greater than or equal to the thickness of the brush arm assembly 210. The accommodation groove 110 can accommodate the brush arm assembly 210. When viewed from a plane parallel to the housing 100, the bristles can be completely hidden and stored in the accommodation groove 110.

[0060] More specifically, please refer to Figure 4 and Figure 5 , a buffer surface 113 is also provided at the opening 111. The buffer surface 113 is opposite to and spaced from the first guiding surface 112. The buffer surface 113 is configured as an inclined surface provided at the other end of the groove side wall 110b. When the brush arm assembly 210 switches to the lowered state, the brush arm assembly 210 can gradually extend out of the accommodation groove 110 under the buffering of the buffer surface 113.

[0061] It can be understood that the buffer surface 1133 and the first guiding surface 112 are respectively located on opposite sides of the opening 111. When the brush arm assembly 210 switches from the lifted state to the lowered state, the brush arm assembly 210 will extend out of the accommodation groove 110. Through the buffering effect provided by the buffer surface 113, the brush arm assembly 210 can gradually extend out of the accommodation groove 110 under the buffering of the buffer surface 113 and will not immediately bounce out of the accommodation groove 110, thus affecting the stability of the structure operation.

[0062] Please refer to Figure 5 , the diameter of the accommodation groove 110 is smaller than the extended diameter of the brush arm assembly 210.

[0063] It can be understood that if the size of the accommodation groove 110 is too large, although the brush arm assembly 210 can be accommodated, it will occupy the space of the housing 100; if the size of the accommodation groove 110 is too small, it will increase the difficulty of accommodating the brush arm assembly 210. Through the above settings, by restricting the diameter of the accommodation groove 110, the brush arm assembly 210 can be wound up in the accommodation groove 110 without occupying too much space of the housing 100.

[0064] Preferably, the diameter of the accommodation groove 110 is smaller than the extended diameter of the brush arm assembly 210 by at least 50 mm.

[0065] Further, please refer to Figure 5 and Figure 6 , the housing 100 is further provided with a guide groove 120 communicating with the accommodation groove 110. The guide groove 120 is located below the accommodation groove 110 in the axial direction of the housing 100. The guide groove 120 has a second guiding surface 121. When the brush arm assembly 210 is in the lifted state, the brush arm assembly 210 can be wound up into the accommodation groove 110 under the axial guiding of the second guiding surface 121.

[0066] It should be noted that the axial direction of the housing 100 is Figure 6The Y direction shown. When the brush arm assembly 210 is in the lifted state, the brush arm assembly 210 is away from the ground. At the same time, under the radial guiding action of the first guiding surface 112, the brush arm assembly 210 gradually slides from the opening 111 into the receiving groove 110. And under the axial guiding and axial limiting action of the second guiding surface 121, the brush arm assembly 210 can be wound into the receiving groove 110 to prevent the brush arm assembly 210 from sliding out or getting stuck outside the receiving groove 110.

[0067] Specifically, please refer to Figure 5 and Figure 6 , the second guiding surface 121 is an inclined surface configured to be circumferentially provided along the guide groove 120.

[0068] It can be understood that the second guiding surface 121 is also the side wall of the guide groove 120. The second guiding surface 121 is arranged at an angle relative to the axis of the machine housing 100, so that the second guiding surface 121 is an inclined surface, thereby being able to play a better axial guiding role for the brush arm assembly 210.

[0069] Please refer to Figure 1 , the side brush device 200 further includes a side brush housing 220, and the brush arm assembly 210 penetrates through the side brush housing 220; when the brush arm assembly 210 is in the lifted state, the side brush housing 220 rotates relative to the brush arm assembly 210, so that the brush arm assembly 210 rotates relative to the receiving groove 110 and is wound into the receiving groove 110.

[0070] Here, the brush arm assembly 210 penetrates through the side brush housing 220, which can be understood as: one end of the brush arm assembly 210 is installed in the side brush housing 220, and the other end of the brush arm assembly 210 penetrates through the side brush housing 220 and is located outside the side brush housing 220.

[0071] It should be noted that during the process of the brush arm assembly 210 being lifted to be separated from the ground, the side brush housing 220 rotates relative to the brush arm assembly 210, that is, the side brush housing 220 rotates relative to the machine housing 100. Since the brush arm assembly 210 penetrates through the side brush housing 220, it is equivalent to the brush arm assembly 210 rotating relative to the machine housing 100. At this time, under the guiding action of the first guiding surface 112, the brush arm assembly 210 gradually slides from the opening 111 into the receiving groove 110, so that the brush arm assembly 210 is wound in the receiving groove 110.

[0072] In this embodiment, the side brush housing 220 is cylindrical, and correspondingly, the cavity 221 is also a cylindrical cavity. In other embodiments, the side brush housing 220 can also be prismatic or other irregular shapes, and correspondingly, the cavity 221 is also a prismatic cavity or a cavity with other irregular shapes.

[0073] In this embodiment, the side brush housing 220, as a component of the appearance structure of the side brush device 200, includes a first housing 220a and a second housing 220b. The first housing 220a and the second housing 220b are mutually covered to form a cavity 221. The first housing 220a and the second housing 220b can be connected by means such as welding, bonding, and snap connection. Among them, the second housing 220b can be located below the first housing 220a, so that the cavity 221 is formed by the up-and-down assembly of the first housing 220a and the second housing 220b; or, the second housing 220b is located on the left side of the first housing 220a, so that the cavity 221 is formed by the left-and-right assembly of the first housing 220a and the second housing 220b.

[0074] In this embodiment, through holes are provided on the end faces of the first housing 220a and the second housing 220b that are close to each other for the brush arm assembly 210 to pass through; further, positioning structures can also be provided on the end faces of the first housing 220a and the second housing 220b that are close to each other to better position the first housing 220a and the second housing 220b.

[0075] Specifically in some embodiments, please refer to Figure 5 , the center of the receiving groove 110 is eccentrically arranged with the rotation center of the side brush housing 220.

[0076] It can be understood that the center of the receiving groove 110 is eccentrically arranged with the rotation center of the side brush housing 220. During the process of the brush arm assembly 210 being lifted to be separated from the ground, the brush arm assembly 210 can be more easily screwed into or out of the receiving groove 110.

[0077] Specifically, please refer to Figure 5 , the receiving groove 110 is configured as a spiral groove that gradually becomes smaller in the screwing-in direction of the brush arm assembly 210 or gradually becomes larger in the screwing-out direction of the brush arm assembly 210.

[0078] It should be noted that the spiral shape that gradually becomes smaller in the screwing-in direction of the brush arm assembly 210 or gradually becomes larger in the screwing-out direction of the brush arm assembly 210 can be understood as: the distance from the center of the receiving groove 110 to the groove side wall 110b of the receiving groove 110 gradually becomes smaller in the screwing-in direction of the brush arm assembly 210 or gradually becomes larger in the screwing-out direction of the brush arm assembly 210, and the groove side wall 110b of the receiving groove 110 rotates around its own center, so that the overall receiving groove 110 is in a shape similar to a volute. In this way, it is beneficial for the brush arm assembly 210 to be screwed into or out of the receiving groove 110.

[0079] Here, the screwing-in direction of the brush arm assembly 210 is Figure 5 the X direction shown, and the screwing-out direction of the brush arm assembly 210 is opposite to Figure 5The direction opposite to the X direction shown. For example, the screwing-in direction of the brush arm assembly 210 is the clockwise direction, and the screwing-out direction of the brush arm assembly 210 is the counterclockwise direction; or, the screwing-in direction of the brush arm assembly 210 is the counterclockwise direction, and the screwing-out direction of the brush arm assembly 210 is the clockwise direction.

[0080] Specifically, in some embodiments, please refer to Figure 5 , the center of the receiving groove 110 coincides with the rotation center of the side brush housing 220.

[0081] Specifically, please refer to Figure 5 , the receiving groove 110 is configured as an arc groove centered on the rotation center of the side brush housing 220.

[0082] It should be noted that the arc shape centered on the rotation center of the brush arm assembly 210 can be understood as: the distance from the center of the receiving groove 110 to the groove side wall 110b of the receiving groove 110 is equal, and the groove side wall 110b of the receiving groove 110 rotates around its own center so that the receiving groove 110 as a whole forms an arc groove.

[0083] Please refer to Figure 7 , the side brush device 200 further includes a guide member 230, a side brush transmission member 240 and a second gear 250. A receiving cavity 221 is provided in the side brush housing 220. The second gear 250 is fixed to the outer wall of the receiving cavity 221. The guide member 230 protrudes from the inner wall of the receiving cavity 221. The side brush transmission member 240 is movably provided in the receiving cavity 221 and is fixedly connected to the brush arm assembly 210;

[0084] Wherein, when the second gear 250 rotates in the first direction, the guide member 230 abuts against the brush arm assembly 210, and the brush arm assembly 210, the side brush transmission member 240, and the side brush housing 220 rotate with the second gear 250, and the brush arm is in the lowered state; when the second gear 250 rotates in the second direction opposite to the first direction, the side brush transmission member 240 is locked, the brush arm assembly 210 does not rotate, the side brush housing 220 rotates with the second gear 250, and the guide member 230 presses down and folds the brush arm assembly 210, and the brush arm assembly 210 is in the lifted state.

[0085] It can be understood that when the second gear 250 rotates in the first direction, the side brush housing 220 rotates with the second gear 250 fixed thereto. Since the brush arm assembly 210 penetrates through the side brush housing 220, the brush arm assembly 210 will also rotate synchronously. Since the side brush transmission member 240 is fixedly connected to the brush arm assembly 210, the side brush transmission member 240 will also rotate synchronously. At this time, the guide member 230 abuts against the brush arm assembly 210, and the guide member 230 does not press down the brush arm assembly 210, and the brush arm assembly 210 is always located at the first position in contact with the ground;

[0086] When the second gear 250 rotates in the second direction, the side brush housing 220 rotates with the second gear 250 fixed thereto. Since the side brush transmission member 240 is locked, the brush arm assembly 210 cannot rotate. The rotation of the side brush housing 220 causes the guide member 230 to continuously press down on the brush arm assembly 210 to form a fold, and the brush arm assembly 210 is folded and lifted to a second position separated from the ground. At the same time, during the rotation of the side brush housing 220 with the second gear 250, the brush arm assembly 210 rotates relative to the receiving groove 110 and is gradually retracted into the receiving groove 110.

[0087] Optionally, the first direction can be one of 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.

[0088] In this embodiment, the second gear 250 is fixed to the outer wall of the cavity 221, that is, when the second gear 250 rotates forward, the side brush housing 220 rotates forward synchronously; when the second gear 250 rotates reversely, the side brush housing 220 rotates reversely synchronously. Among them, the second gear 250 can be coaxially fixed to the first housing 220a of the side brush housing 220, that is, the central axis of the second gear 250 coincides with the central axis of the side brush housing 220, and the second gear 250 is fixed to the side brush housing 220.

[0089] In this embodiment, the guide member 230 and the side brush housing 220 can be an integral structure. For example, the guide member 230 is integrally formed on the inner wall of the cavity 221, with high integrity and mechanical strength.

[0090] In this embodiment, the side brush transmission member 240 is fixedly connected to the brush arm assembly 210, for example, fixed by means of clamping, plugging or screwing. The side brush transmission member 240 has a cylindrical structure and is vertically installed in the cavity 221, that is, the axial direction of the side brush transmission member 240 is parallel or overlapped with the axial direction of the cavity 221. In other embodiments, the side brush transmission member 240 can also be a cylindrical structure of other shapes.

[0091] Specifically, please refer to Figures 8 to 10 , the guide member 230 is provided with an abutting inclined surface 231 along the axial direction of the cavity 221, and the brush arm assembly 210 has a bent portion 211 that can undergo elastic deformation; when the second gear 250 rotates in the first direction, the abutting inclined surface 231 abuts against the bent portion 211; when the second gear 250 rotates in the second direction, the abutting inclined surface 231 presses down and folds the bent portion 211 to lift the brush arm assembly 210.

[0092] It should be noted that the abutting inclined surface 231 refers to a surface that is arranged around the rotation direction of the side brush housing 220 and whose height gradually changes in the height direction of the guide member 230. The abutting inclined surface 231 faces the brush arm assembly 210. When the second gear 250 rotates in the first direction, the position of the abutting inclined surface 231 remains unchanged, and the abutting inclined surface 231 is always in contact with the bent portion 211; when the second gear 250 rotates in the second direction, the rotation of the side brush housing 220 causes the position of the abutting inclined surface 231 to change, gradually increasing the abutting force of the abutting inclined surface 231 on the brush arm assembly 210, so that the brush arm assembly 210 is pressed down to cause folding, so as to lift the brush arm assembly 210.

[0093] More specifically, please refer to Figure 9 and Figure 11 , the brush arm assembly 210 includes a sleeved portion 212, a bent arm 213 and a tuft of bristles 214. The tuft of bristles 214 and the bent portion 211 are respectively fixed to both ends of the bent arm 213. The bent portion 211 is fixedly connected to the sleeved portion 212, and the sleeved portion 212 is sleeved and fixed on the side brush transmission member 240.

[0094] It can be understood that the tuft of bristles 214 and the bent portion 211 are respectively fixed to both ends of the bent arm 213, which can not only clean the ground, but also facilitate the assembly of the brush arm assembly 210.

[0095] In this embodiment, the sleeved portion 212 can be in the shape of a ring such as a circle, an ellipse or other shapes, as long as the sleeved portion 212 can be sleeved and fixed on the side brush transmission member 240.

[0096] In this embodiment, along the radial direction of the side brush transmission member 240, the thickness of the bent portion 211 near the center of the side brush transmission member 240 is less than the thickness far from the center of the side brush transmission member 240, which can make the bent portion 211 form an arc groove or a V-shaped groove along the radial direction of the side brush transmission member 240, so that the bent portion 211 can be more easily abutted and pressed down, and the thinner center of the bent portion 211 deforms, driving the bent portion 211 to turn downwards, thereby changing the bending direction of the bent arm 213.

[0097] In this embodiment, the sleeved portion 212 and the bent arm 213 are made of plastic, and the bent portion 211 and the tuft of bristles 214 are made of elastic materials such as rubber. The elastic material and plastic can be fixed by insert injection molding. The number of the bent arms 213 can be at least two, and at least two bent arms 213 are equally angularly distributed in the horizontal circumference of the side brush sleeved portion 212. In other embodiments, each part of the brush arm assembly 210 can also be made of other materials and processes.

[0098] Please refer to Figure 9, the side brush device 200 further includes an elastic member 260 sleeved on the side brush transmission member 240. The first end of the elastic member 260 is fixed to the side brush housing 220, and the second end of the elastic member 260 is fixed to the side brush transmission member 240. When the second gear 250 rotates in the second direction, the elastic member 260 provides a torsional force and is in an energy storage state. When the second gear 250 rotates in the first direction, through the torsional recovery of the elastic member 260, the brush arm assembly 210 can be driven to fold back to its original position.

[0099] It can be understood that when the second gear 250 rotates in the first direction, the side brush housing 220 rotates with the second gear 250 fixed thereto. When the transmission shaft 280 is subjected to force and rotates in the first direction, the one-way transmission member 270 does not restrict the rotation of the transmission shaft 280. Since the brush arm assembly 210 penetrates through the side brush housing 220, the brush arm assembly 210 will also rotate synchronously. At this time, the brush arm assembly 210 is in a lowered state. The rotation of the second gear 250 can drive the brush arm assembly 210 to rotate in the lowered state, so that the brush arm assembly 210 remains in contact with the ground for normal floor cleaning. At this time, the elastic member 260 is in a state with a relatively small compression angle.

[0100] When the second gear 250 rotates in the second direction, due to the locking effect of the one-way transmission member 270 on the side brush transmission member 240, the side brush transmission member 240 cannot rotate synchronously with the side brush housing 220, and the brush arm assembly 210 cannot rotate either. The side brush housing 220 and the brush arm assembly 210 rotate relative to each other. During the relative rotation process, the pressing force of the abutting inclined surface 231 of the guiding member 230 on the bent portion 211 is gradually increased, so that the brush arm assembly 210 folds under the action of the pressing force. At this time, the brush arm assembly 210 is in a lifted state, so that the brush arm assembly 210 is away from the ground. At the same time, during the relative rotation process of the side brush housing 220 and the brush arm assembly 210, the brush arm assembly 210 rotates relative to the accommodating groove 110 and is gradually retracted into the accommodating groove 110 to further prevent the brush arm assembly 210 from being secondarily contaminated by the dirt on the ground. At this time, the elastic member 260 is in a state with a relatively large compression angle, and the torque generated by the elastic member 260 is relatively large, and the elastic member 260 gradually stores energy.

[0101] When the second gear 250 rotates in the first direction next time, due to the torsional recovery of the elastic member 260, the pressing force of the abutting inclined surface 231 on the bent portion 211 is gradually reduced, the deformation of the bent portion 211 is restored, and the brush arm assembly 210 is reset from the lifted state to the lowered state. The brush arm assembly 210 extends out of the accommodating groove 110 and contacts the ground again for normal floor cleaning.

[0102] In this embodiment, a first clamping groove is provided in the side brush housing 220. One end of the elastic member 260 is fixed in the first clamping groove, and a second clamping groove is provided on the side brush transmission member 240. The second end of the elastic member 260 is fixed in the second clamping groove.

[0103] In this embodiment, the elastic member 260 is a torsion spring. The number of the elastic members 260 is not limited to one. When the number of the elastic members 260 is at least two, the elastic members 260 can be arranged side by side in the same direction or in other arrangements. In other embodiments, the elastic member 260 can also be a spring piece or other members that can undergo elastic deformation.

[0104] Further, please refer to Figure 7 , the side brush device 200 further includes a one-way transmission member 270 and a transmission shaft 280. The transmission shaft 280 is movably connected to the second gear 250, and the transmission shaft 280 is fixedly connected to the side brush transmission member 240 and the one-way transmission member 270 respectively. The one-way transmission member 270 is used to limit the transmission shaft 280 to rotate only in one direction around the first direction.

[0105] It can be understood that when the second gear 250 rotates in the first direction, the side brush housing 220 rotates with the second gear 250 fixed thereto, and the transmission shaft 280 rotates around the first direction under force, and the one-way transmission member 270 does not restrict the rotation of the transmission shaft 280; when the second gear 250 rotates in the second direction, due to the one-way locking function of the one-way transmission member 270, the current position of the transmission shaft 280 is locked, and the transmission shaft 280 cannot rotate in the second direction.

[0106] In this embodiment, the transmission shaft 280 is movably connected to the second gear 250, which means that the rotation of the second gear 250 does not directly drive the transmission shaft 280 to rotate. Among them, the movable connection can be a clearance fit, a sliding connection, etc.

[0107] In this embodiment, the transmission shaft 280 and the side brush transmission member 240 can be coaxially arranged, and the transmission shaft 280 and the side brush transmission member 240 are penetrated by a threaded connector to fix the two.

[0108] In this embodiment, the transmission shaft 280 is fixedly connected to the one-way transmission member 270. The rotating part of the one-way transmission member 270 is fixed to the transmission shaft 280. The one-way transmission member 270 has a one-way locking function, which restricts the side brush transmission to rotate only in one of the rotation directions. Optionally, the one-way transmission member 270 can be a one-way bearing.

[0109] Even further, please refer to Figure 7, the side brush device 200 further includes a rotational motion outputter 291 and a gear box 292. The second gear 250 and the one-way transmission member 270 are both installed in the gear box 292. The rotational motion outputter 291 is in transmission connection with the second gear 250 to drive the second gear 250 to rotate through the rotational motion outputter 291.

[0110] It should be noted that the rotational motion outputter 291 is used to output rotational motion. It is in transmission connection with the second gear 250, drives the second gear 250 to rotate through the rotational motion outputter 291, and provides rotational power to the side brush housing 220.

[0111] In this embodiment, the rotational motion outputter 291 can be installed on the gear box 292. The rotational motion outputter 291 can include devices such as a servo motor and a stepper motor.

[0112] In this embodiment, the gear box 292 is used to provide an assembly space. The two gears and the one-way transmission member 270 are both installed in the assembly space.

[0113] 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-described 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.

[0114] The above-described embodiments only represent 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 deformations 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 should be subject to the appended claims.

Claims

1. A sweeping robot, characterized in that: include: The housing (100) is provided with a receiving groove (110); A side brush device (200) is mounted on the housing (100), the side brush device (200) comprising a brush arm assembly (210), the brush arm assembly (210) being configured to be switchable between a lowered state and a raised state; The accommodating groove (110) has an opening (111) communicating with the outside, and a first guide surface (112) is provided at the opening (111); when the brush arm assembly (210) is in a raised state, at least part of the brush arm assembly (210) can undergo elastic deformation, so that the brush arm assembly (210) can be rolled into the accommodating groove (110) under the radial guidance of the first guide surface (112).

2. The sweeping robot according to claim 1, characterized in that: The accommodating groove (110) comprises a groove bottom wall (110a) and a groove side wall (110b) surrounding the groove bottom wall (110a), and the first guide surface (112) is constructed as an inclined surface provided at one end of the groove side wall (110b).

3. The sweeping robot according to claim 2, characterized in that: The depth of the groove side wall (110b) is greater than or equal to the thickness of the brush arm assembly (210).

4. The sweeping robot according to claim 2, characterized in that: A buffer surface (113) is also provided at the opening (111), the buffer surface (113) is opposite to the first guide surface (112) and is arranged at a distance, and the buffer surface (113) is constructed as an inclined surface provided at the other end of the groove side wall (110b); When the brush arm assembly (210) is switched to a descending state, the brush arm assembly (210) can gradually extend out of the accommodating groove (110) under the buffering of the buffer surface (113).

5. The sweeping robot according to claim 1, characterized in that: The diameter of the accommodating groove (110) is smaller than the extended diameter of the brush arm assembly (210).

6. The sweeping robot according to claim 1, characterized in that: The housing (100) is further provided with a guide groove (120) communicating with the accommodating groove (110); the guide groove (120) is located below the accommodating groove (110) in the axial direction of the housing (100); and the guide groove (120) has a second guide surface (121); When the brush arm assembly (210) is in a raised state, the brush arm assembly (210) can be rolled into the accommodating groove (110) under the axial guidance of the second guide surface (121).

7. The sweeping robot according to claim 6, characterized in that: The second guide surface (121) is an inclined surface configured to be arranged along the circumference of the guide groove (120).

8. The sweeping robot according to claim 1, characterized in that: The side brush device (200) further comprises a side brush housing (220), and the brush arm assembly (210) is disposed through the side brush housing (220); When the brush arm assembly (210) is in a raised state, the side brush housing (220) rotates relative to the brush arm assembly (210), so that the brush arm assembly (210) rotates relative to the accommodating groove (110) and is rolled into the accommodating groove (110).

9. The sweeping robot according to claim 8, characterized in that: The center of the accommodating groove (110) and the rotation center of the side brush housing (220) are eccentrically arranged.

10. The sweeping robot according to claim 9, characterized in that: The accommodating groove (110) is constructed as a spiral groove that gradually becomes smaller in the screw-in direction of the brush arm assembly (210) or gradually becomes larger in the screw-out direction of the brush arm assembly (210).

11. The sweeping robot according to claim 8, characterized in that: The center of the accommodating groove (110) and the rotation center of the side brush housing (220) are arranged to overlap.

12. The sweeping robot according to claim 11, characterized in that: The accommodating groove (110) is constructed as an arc groove with the rotation center of the side brush housing (220) as the center of the circle.

13. The sweeping robot according to claim 8, characterized in that: The side brush device (200) further comprises a guide member (230), a side brush transmission member (240) and a second gear (250); a cavity (221) is provided in the side brush housing (220); the second gear (250) is fixed to the outer wall of the cavity (221); the guide member (230) is protruding from the inner wall of the cavity (221); the side brush transmission member (240) is movably disposed in the cavity (221) and is fixedly connected to the brush arm assembly (210); When the second gear (250) rotates in a first direction, the guide member (230) abuts against the brush arm assembly (210), the brush arm assembly (210), the side brush transmission member (240), and the side brush housing (220) rotate along with the second gear (250), and the brush arm is in a descending state; When the second gear (250) rotates in a second direction opposite to the first direction, the side brush transmission member (240) is locked, the brush arm assembly (210) does not rotate, the side brush housing (220) rotates along with the second gear (250), the guide member (230) presses down and folds the brush arm assembly (210), and the brush arm assembly (210) is in a raised state.

14. The sweeping robot according to claim 13, characterized in that: The guide member (230) is provided with an abutment inclined surface (231) along the axial direction of the cavity (221); and the brush arm assembly (210) has a bending portion (211) capable of elastic deformation; When the second gear (250) rotates around the first direction, the abutting inclined surface (231) abuts against the bent portion (211); when the second gear (250) rotates around the second direction, the abutting inclined surface (231) presses down and folds the bent portion (211) so that the brush arm assembly (210) is lifted.

15. The sweeping robot according to claim 14, characterized in that: The brush arm assembly (210) comprises a sleeve portion (212), a curved arm (213) and a hair bundle (214); the hair bundle (214) and the bent portion (211) are respectively fixed to two ends of the curved arm (213); the bent portion (211) is fixedly connected to the sleeve portion (212); and the sleeve portion (212) is sleeved and fixed on the side brush transmission member (240).

16. The sweeping robot according to claim 13, characterized in that: The side brush device (200) further comprises an elastic member (260) sleeved on the side brush transmission member (240), a first end of the elastic member (260) being fixed to the side brush housing (220), and a second end of the elastic member (260) being fixed to the side brush transmission member (240); When the second gear (250) rotates about the second direction, the elastic member (260) provides a torsional force and is in an energy storage state; when the second gear (250) rotates about the first direction, the torsional recovery of the elastic member (260) can drive the brush arm assembly (210) to fold and reset.

17. The sweeping robot according to claim 13, characterized in that: The side brush device (200) further comprises a one-way transmission member (270) and a transmission shaft (280); the transmission shaft (280) is movably connected to the second gear (250); the transmission shaft (280) is respectively fixedly connected to the side brush transmission member (240) and the one-way transmission member (270); the one-way transmission member (270) is used to limit the transmission shaft (280) to only be able to rotate in one direction around the first direction.

18. The sweeping robot according to claim 17, characterized in that: The side brush device (200) further comprises a rotational motion output device (291) and a gear housing (292); the second gear (250) and the one-way transmission member (270) are both installed in the gear housing (292); the rotational motion output device (291) is transmission-connected to the second gear (250) so as to drive the second gear (250) to rotate via the rotational motion output device (291).

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