Roll brush assembly for autonomous mobile device and autonomous mobile device

Abstract

The utility model provides a rolling brush assembly for autonomous mobile equipment and the autonomous mobile equipment. Along with rotation of a main brush of the rolling brush assembly, entanglements such as hair rolled up by the main brush can be conveyed and gathered to the cutting assembly located on one side of the main brush in the axial direction and wound around the cutting assembly. Furthermore, the entanglements gathered and wound on the cutting assembly are cut off by the cutting assembly, so that the entanglements can be prevented from being wound on the rolling brush assembly or gathered on the two axial sides of the main brush, and the faults that the cleaning capacity of the main brush of the autonomous mobile equipment is reduced and the main brush rotates to be stuck due to the entanglements are greatly reduced with a relatively simple structure.

Description

Technical Field

[0001] The present disclosure relates to the structure of an autonomous mobile device, and in particular to a roller brush assembly for the autonomous mobile device and an autonomous mobile device including the roller brush assembly. Background Art

[0002] Autonomous mobile devices refer to intelligent mobile devices that can autonomously perform preset tasks. Currently, autonomous mobile devices generally include but are not limited to cleaning robots (such as intelligent sweepers, intelligent floor scrubbers, window cleaning robots), companion mobile robots (such as intelligent electronic pets, nanny robots), service mobile robots (such as reception robots in hotels, inns, and meeting places), industrial inspection intelligent devices (such as power inspection robots, intelligent forklifts, etc.), and security robots (such as home or commercial intelligent guard robots).

[0003] For an autonomous mobile device with a dry cleaning component, it can use the dry cleaning component to clean the surface to be cleaned while traveling on the traveling surface (e.g., the surface to be cleaned). During the cleaning process, entanglements such as hair are rolled up by the main brush of the dry cleaning component, and part of the entanglements will be entangled on the main brush and transported to the axial ends of the main brush as the main brush rotates. Furthermore, when more and more entanglements accumulate at the axial ends of the main brush, the cleaning ability of the main brush may be reduced and the rotation may become stuck. Utility Model Content

[0004] Based on the above problems of the prior art, the purpose of the present disclosure is to provide a roller brush assembly for an autonomous mobile device, which can significantly reduce the failure of the main brush of the autonomous mobile device due to entanglement and rotation jamming with a relatively simple structure. Another purpose of the present disclosure is to provide an autonomous mobile device including the above roller brush assembly.

[0005] In order to achieve the above objectives, the present disclosure adopts the following technical solutions.

[0006] The present disclosure provides a roller brush assembly for an autonomous mobile device, comprising:

[0007] a main brush provided with bristles, the main brush being configured to convey a wound object wound around the main brush toward one axial side of the main brush along an axial direction as a conveying direction during rotation of the main brush; and

[0008] A cutting assembly is located on one axial side of the main brush and is installed at the axial end of the main brush. The cutting assembly includes a fixed cutting part and a movable cutting part. Both the fixed cutting part and the movable cutting part are assembled with the main brush. The movable cutting part can generate relative movement relative to the fixed cutting part during the rotation of the main brush to cut off the entanglement.

[0009] In an optional solution, the cutting assembly also includes a groove shaft, which is formed with an inclined annular groove extending obliquely relative to the circumference of the groove shaft, and one end of the movable cutting part is located in the inclined annular groove, so that during the rotation of the main brush, the groove shaft and the main brush produce relative movement, thereby driving the movable cutting part to produce relative movement relative to the fixed cutting part via the inclined annular groove to cut off the entanglement.

[0010] In another optional embodiment, the slotted shaft includes:

[0011] a shaft main body, the inclined annular groove being formed in the shaft main body;

[0012] A first shaft end portion is drivingly connected to the first axial end portion of the shaft body portion and inserted and installed in the main brush, so that the groove shaft and the main brush can rotate relative to each other when the first shaft end portion supports the main brush; and

[0013] The second shaft end portion is fixed to the second axial end portion of the shaft main body portion and is used to non-rotatably mount the slot shaft on the housing of the autonomous mobile device.

[0014] In another optional solution, the movable cutting portion includes a base portion and a bearing portion, the bearing portion is mounted on one end of the base portion and the bearing portion is located in the inclined annular groove, and a cutting blade is formed at the other end of the base portion.

[0015] In another optional solution, the cutting assembly also includes a shell, which is fixed to the axial end of the main brush, the slot shaft passes through the shell and is inserted and installed on the main brush, and the fixed cutting part and the movable cutting part are both installed on the shell.

[0016] In another optional scheme, the fixed cutting part has a plurality of fixed teeth, and the base part of the movable cutting part has a plurality of movable teeth, and the side edge of each movable tooth forms a cutting blade. When the fixed cutting part and the movable cutting part generate the relative movement, the movable teeth and the fixed teeth move relative to each other to stagger each other, thereby cutting off the entanglement.

[0017] In another optional scheme, a fixed cover is also included, which includes a cover body and at least one auxiliary cutting part extending from the cover body, the cover body is non-rotatably installed together with the slot shaft, and the auxiliary cutting part includes a limiting tooth that cooperates with the fixed cutting part and the movable cutting part, and the winding object can be limited by the limiting tooth.

[0018] In another optional scheme, each of the auxiliary cutting parts includes a plurality of the limiting teeth, and the plurality of the limiting teeth include radial teeth and circumferential teeth. The radial teeth are arranged on the inner circumferential surface of the auxiliary cutting part, and the radial teeth are staggered with the fixed teeth and are always staggered with the movable teeth, and the circumferential teeth are arranged on the circumferential end edge of the auxiliary cutting part.

[0019] In another optional solution, the fixed cover further comprises a first stop portion provided on the cover body, the first stop portion comprises a stop tooth, the stop tooth can extend into the inter-tooth groove of the fixed cutting portion closest to the main brush, the stop tooth is staggered with the fixed teeth and is always staggered with the movable teeth; and / or

[0020] The fixed cover further includes a second stopper portion provided on the cover body, the second stopper portion being spaced apart from the auxiliary cutting portion and being positioned radially outward of the housing in a cantilever manner.

[0021] In another optional scheme, the cover body includes an end cover part and a bottom shell part fixed to each other, the end cover part is installed on the shell from one axial side and is non-rotatably installed with the groove shaft, the bottom shell part extends along the axial direction to partially cover the main brush, and the bottom shell part is provided with a plurality of first comb teeth at at least one side edge thereof, and the plurality of first comb teeth are arranged at intervals in the axial direction.

[0022] In another optional solution, when the main brush and the slot shaft are in relative motion, the movable cutting part can swing back and forth relative to the fixed cutting part.

[0023] In another optional solution, when the main brush and the slot shaft are in relative motion, the movable cutting part can perform reciprocating axial linear motion relative to the fixed cutting part.

[0024] In another optional solution, it also includes:

[0025] a connecting member, which is located at the other axial side of the main brush and is fixedly mounted on the axial end of the main brush, and the connecting member is used for transmission connection with a power source; and

[0026] A blocking ring is sleeved on the connecting piece, and the outer diameter of the blocking ring is greater than the outer diameter of the main body of the main brush.

[0027] The present disclosure also provides the following autonomous mobile device, comprising the roller brush assembly for the autonomous mobile device as described in any one of the above technical solutions.

[0028] In an optional solution, the autonomous mobile device body includes a mounting recess formed at the bottom of the autonomous mobile device body, the main brush is accommodated and mounted in the mounting recess, the autonomous mobile device body is formed with a dust suction port facing the main brush, and the length of the dust suction port is greater than 80% of the axial length of the main brush.

[0029] In another optional scheme, the autonomous mobile device body includes a casing and a mounting cover assembled together, the mounting recess is formed in the casing, the mounting cover is installed at the opening of the mounting recess and forms a cover opening, and the mounting cover is provided with a plurality of second comb teeth at the side edge of the cover opening, and the plurality of second comb teeth are arranged at intervals in the axial direction.

[0030] By adopting the above technical solution, the present disclosure provides a roller brush assembly for an autonomous mobile device and an autonomous mobile device including the roller brush assembly. The roller brush assembly includes a main brush and a cutting assembly assembled together. The main brush is provided with bristles, and the main brush is configured to transport the windings wound around the main brush along an axial direction as a conveying direction toward one axial side of the main brush during the rotation of the main brush. Furthermore, the cutting assembly is located on one axial side of the main brush and is installed at an axial end of the main brush. The cutting assembly includes a fixed cutting part and a movable cutting part, both of which are assembled with the main brush, and the movable cutting part can generate relative movement relative to the fixed cutting part during the rotation of the main brush to cut off the windings.

[0031] In this way, as the main brush rotates, the entangled objects such as hair rolled up by the main brush can be transported and gathered to the cutting assembly located on one axial side of the main brush and wound around the cutting assembly. Furthermore, the entangled objects gathered and wound around the cutting assembly are cut off by the cutting assembly, thereby preventing the entangled objects from being wound around the roller brush assembly or gathered on both axial sides of the main brush. Thus, with a relatively simple structure, the main brush of the autonomous mobile device can be greatly reduced in cleaning ability reduction and rotation jamming due to the entangled objects. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1A 1 is a perspective schematic diagram showing a roller brush assembly for an autonomous mobile device according to a first embodiment of the present disclosure.

[0033] Figure 1B It shows Figure 1A Schematic diagram of an exploded view of a roller brush assembly for an autonomous mobile device.

[0034] Figure 1C It shows Figure 1B An enlarged schematic diagram of the local structure.

[0035] Figure 2Ais an exploded schematic diagram showing a roller brush assembly for an autonomous mobile device according to a second embodiment of the present disclosure.

[0036] Figure 2B It shows Figure 2A An enlarged schematic diagram of the partial structure of the roller brush assembly for the autonomous mobile device.

[0037] Figure 3A 1 is an enlarged schematic diagram showing a partial structure of a roller brush assembly for an autonomous mobile device according to a third embodiment of the present disclosure.

[0038] Figure 3B It shows Figure 3A Schematic diagram of the exploded structure of part of the roller brush assembly.

[0039] Figure 3C It shows Figure 3A A three-dimensional schematic diagram of the partial structure of the roller brush assembly.

[0040] Figure 3D is a perspective schematic diagram showing a modified example of the third embodiment according to the present disclosure.

[0041] Figure 4A 3D is a schematic perspective view showing a partial structure of a roller brush assembly for an autonomous mobile device according to a fourth embodiment of the present disclosure.

[0042] Figure 4B It shows Figure 4A Another stereoscopic schematic diagram of the local structure of the roller brush assembly.

[0043] Figure 4C It shows Figure 4A A three-dimensional schematic diagram of an assembly of a roller brush assembly and a mounting cover of an autonomous mobile device.

[0044] Figure 5A It shows that Figure 1A A schematic diagram of the partial structure of an autonomous mobile device with a roller brush assembly is shown in FIG.

[0045] Figure 5B It shows Figure 5A Schematic diagram of the decomposition of the structure.

[0046] Description of Reference Numerals

[0047] BS—roller brush assembly;

[0048] 1—main brush; 11—main body; 12—spiral part; 13—bristles;

[0049] 2—cutting assembly; 21—fixed cutting part; 21t—fixed teeth; 22—movable cutting part; 22t—movable teeth; 221—base part; 222—bearing part; 23—grooved shaft; 231—shaft body; 231c—inclined annular groove; 232—first shaft end; 233—second shaft end; 24—housing; 24c—receiving annular groove; 24t—limiting teeth;

[0050] 3—Connectors;

[0051] 4—Blocking ring;

[0052] 5—fixed cover; 51—cover body; 511—end cover portion; 512—bottom shell portion; 512t—first comb teeth; 52—auxiliary cutting portion; 52t1—radial teeth; 52t2—circumferential teeth; 53—first stopper portion; 53t—stopper teeth; 54—second stopper portion;

[0053] MB—autonomous mobile device body;

[0054] 6—housing; 6c—installation recess; 6p—dust suction port;

[0055] 7—installation cover; 7o—cover opening; 7t—second comb teeth;

[0056] A—Axial. DETAILED DESCRIPTION

[0057] The following describes the embodiments of the present disclosure with reference to the accompanying drawings. For ease of understanding, the elements shown in the drawings may include elements whose sizes and scales are different from the actual sizes and scales.

[0058] In the present disclosure, unless otherwise specified, "front (front side)", "rear (rear side)", "left (left side)", "right (right side)", "upper (upper side)", and "lower (lower side)" are all relative to the normal operating state of the autonomous mobile device according to the present disclosure. Specifically, the autonomous mobile device has a positive direction of movement (i.e., positive direction) when in the normal operating state. The so-called "normal operating state" refers to the moving state of the autonomous mobile device when performing a task, which is distinguished from the non-normal operating state such as retreat and swing of the autonomous mobile device in the escape mode. "Front (front side)" and "rear (rear side)" refer to the front and rear sides of the autonomous mobile device in the positive forward direction when the autonomous mobile device according to the present disclosure is in a normal operating state on the traveling surface (e.g., the surface to be cleaned). "Left (left side)" and "right (right side)" refer to the left and right sides when viewed from the front side in the positive forward direction. "Up (upper side)" and "Down (lower side)" refer to the upper and lower sides in the height direction perpendicular to the traveling surface when the autonomous mobile device according to the present disclosure is in a normal operating state on the traveling surface.

[0059] In the present disclosure, the autonomous mobile device can move autonomously according to the control scheme preset in its processing unit. The traveling surface where the autonomous mobile device moves autonomously can be a plane or a curved surface with a large radius of curvature, typically the floor of each room in a building. The processing unit in the present disclosure is a general term, and the type, quantity and form of the processing unit are not limited. Specifically, the processing unit can be one or more of MCU, DSP, FPGA, GPU, or other types of hardware chips, processors or software algorithms with data processing and computing capabilities. Further, the processing unit can be a unified and unique processor of the autonomous mobile device, or a collection of multiple processing units, and the connection mode, function and computing power distribution of multiple processing units can be adjusted as needed. For example, in an optional solution, a first processing unit and a second processing unit can be included. In this case, the first processing unit and the second processing unit as a whole realize the various functions of the above-mentioned processing units. In addition, the processing unit of the autonomous mobile device of the present disclosure can receive parameters from the sensing component, and can perform relevant control on the autonomous mobile device through a preset program stored in the storage unit. In the present disclosure, the data, information, and programs required by the processing unit during the processing process can be stored in the storage unit and obtained from the storage unit as needed. The processing unit can store the processed data, information, etc. in the storage unit again. The storage unit can be a RAM, ROM, etc., or a device and / or equipment with storage function such as a cloud / server / mobile terminal connected via a wired / wireless network.

[0060] In the present disclosure, unless otherwise specified, "axial direction" refers to the direction along the central axis of the main body of the main brush, and "one side of the axial direction" refers to the side where the cutting assembly is located in the above-mentioned axial direction (for example, Figure 1B The “other axial side” refers to the side where the blocking ring is located in the above axial direction (e.g. Figure 1B on the left side of the image).

[0061] In the present disclosure, “drive connection” between two components means that the two components are connected in a torque-transmitting manner, including direct connection and indirect connection.

[0062] The following describes a roller brush assembly for an autonomous mobile device according to a first embodiment of the present disclosure in conjunction with the accompanying drawings.

[0063] like Figures 1A to 1C As shown, the roller brush assembly BS for an autonomous mobile device according to the first embodiment of the present disclosure includes a main brush 1, a cutting assembly 2, a connector 3, a blocking ring 4 and a fixing cover 5 that are assembled together.

[0064] In this embodiment, if Figures 1A to 1CAs shown, the main brush 1 has a main body 11, a multi-headed spiral portion 12 and bristles 13. The main body 11 is formed in a cylindrical shape or a truncated cone shape. When the main body 11 is formed in a truncated cone shape, the generatrix can have an inclination angle greater than or equal to 1 degree relative to the central axis. The multi-headed spiral portion 12 can also be called a multi-headed thread portion. In this embodiment, the number of heads of the spiral portion 12 is 4. The multi-headed spiral portion 12 is formed on the outer peripheral surface of the main body 11 and protrudes relative to the outer peripheral surface. Each head of the spiral portion 12 can span a central angle of 180 degrees. The bristles 13 are arranged at the top end of each spiral portion 12 away from the main body 11, and the bristles 13 are arranged along the extension trajectory of the corresponding spiral portion 12. After the roller brush assembly BS is installed to the housing 6 of the autonomous mobile device, as the autonomous mobile device moves, the bristles 13 of the main brush 1 can roll up dry dirt (such as dust and hair) on the moving surface (such as the surface to be cleaned), and then these dry dirt can be sucked into the dust box by the autonomous mobile device. This is also the main function of the main brush 1.

[0065] Furthermore, during the operation of the autonomous mobile device, windings such as hair and the like will be entangled in the main brush 1 and cannot be sucked into the dust box. As the main brush 1 rotates, the windings entangled in the main brush 1 are conveyed toward one axial side of the main brush 1 along the axial direction A which is the conveying direction. In this way, the relative relationship between the windings and the main brush 1 during the rotation of the main brush 1 is similar to the relative relationship between the nut and the bolt (or the lead screw nut). Therefore, during the rotation of the main brush 1 and when the windings interfere or rub against the traveling surface, the windings move relative to the main brush 1 in the axial direction A. By controlling the rotation direction of the multi-head spiral portion 12 of the main brush 1 and the rotation direction of the main brush 1, the windings can be conveyed along the axial direction A toward one axial side.

[0066] In this embodiment, if Figures 1A to 1C As shown, the cutting assembly 2 is located at one axial side of the main brush 1 and is installed at the axial end of the main brush 1. Specifically, the cutting assembly 2 includes a fixed cutting part 21, a movable cutting part 22, a slotted shaft 23 and a housing 24 that are assembled together.

[0067] Specifically, Figure 1B and Figure 1CAs shown, the fixed cutting part 21 and the movable cutting part 22 are assembled with the main brush 1 via the housing 24, and the movable cutting part 22 can generate relative movement relative to the fixed cutting part 21 during the rotation of the main brush 1 to cut off the windings from the main brush 1. The fixed cutting part 21 has a flat sheet-like structure, and the fixed cutting part 21 is installed on the housing 24 and fixed relative to the housing 24. The fixed cutting part 21 has a plurality of fixed teeth 21t arranged at intervals along the axial direction A, and each fixed tooth 21t protrudes relative to the main structure of the fixed cutting part 21. The movable cutting part 22 includes a base part 221 and a bearing part 222. The base part 221 has a flat sheet-like structure, and the base part 221 is arranged adjacent to the fixed cutting part 21. The base part 221 has a plurality of movable teeth 22t arranged at intervals along the axial direction A, and each movable tooth 22t protrudes relative to the main structure of the base part 221. The bearing portion 222 is mounted on one end of the base portion 221 and the bearing portion 222 is always located in the following inclined annular groove 231c of the groove shaft 23. A plurality of movable teeth 22t are formed on the other end of the base portion 221 and the side edges of the movable teeth 22t form cutting blades. When the movable cutting portion 22 and the fixed cutting portion 21 are in relative motion, the movable teeth 22t and the fixed teeth 21t move relative to each other to stagger with each other, and the staggered motion of the plurality of teeth 21t and 22t is beneficial to effectively cut off the accumulated windings.

[0068] Furthermore, if Figure 1B and Figure 1CAs shown, the groove shaft 23 extends linearly along the axial direction A as a whole and includes a shaft body 231, a first shaft end 232 and a second shaft end 233 assembled together. The shaft body 231 is formed with an inclined annular groove 231c extending obliquely relative to the circumferential direction of the shaft body 231, and the bearing portion 222 of the movable cutting portion 22 is always located in the inclined annular groove 231c. The first shaft end 232 and the first axial end (the other axial end) of the shaft body 231 are connected to each other by a spline, for example, and the first shaft end 232 extends from the shaft body 231 toward the other axial side and is inserted and installed in the main brush 1. In addition, the main brush 1 can be provided with at least one bearing corresponding to the first shaft end 232, the inner ring of the bearing is fixedly connected to the first shaft end 232, and the outer ring of the bearing is fixedly connected to the main body 11 of the main brush 1. If, in actual use, one bearing is not enough to maintain the stability and smoothness of the main brush 1 during rotation, the length of the first shaft end 232 can be increased, and the number of bearings arranged at intervals can be increased in the main brush 1 to ensure the stability and smoothness of the main brush 1 during rotation. When the first shaft end 232 supports the main brush 1, the groove shaft 23 and the main brush 1 can rotate relative to each other. The second shaft end 233 is fixed to the second axial end (one axial end) of the shaft body 231, and the second shaft end 233 extends from the shaft body 231 toward one axial side and is inserted and installed in the fixed cover 5, so that the groove shaft 23 is non-rotatably installed on the main body 11 of the autonomous mobile device via the fixed cover 5. In this way, during the rotation of the main brush 1, the groove shaft 23 and the main brush 1 generate relative movement, thereby driving the movable cutting part 22 to generate relative movement relative to the fixed cutting part 21 via the inclined annular groove 231c to cut off the windings, thereby realizing automatic cutting of the windings wound on the main brush 1, saving the time and cost of manual cleaning, and facilitating user use. Therefore, when the main brush 1 and the groove shaft 23 generate relative movement, the bearing portion 222 of the movable cutting portion 22 cooperates with the inclined annular groove 231c of the groove shaft 23 to realize the relative movement of the movable cutting portion 22 relative to the fixed cutting portion 21, which is conducive to smoothly and stably realizing the above-mentioned relative movement and reducing the risk of the movable cutting portion 22 and the groove shaft 23 getting stuck.

[0069] Furthermore, if Figure 1B and Figure 1CAs shown, the housing 24 includes two housing halves that are snapped together, one housing half is formed as a whole with the main brush 1, and the other housing half can be fixed to the above housing half by a threaded connector, so that the housing 24 is fixed to one end of the main brush 1 in the axial direction and a receiving space is formed in the housing 24. The groove body 11 of the groove shaft 23 is located in the receiving space of the housing 24, the first shaft end 232 passes through the housing 24 and is inserted and installed in the main brush 1 and is rotatably connected to the main brush 1, for example, via a bearing, and the second shaft end 233 passes through the housing 24 and is inserted and installed in the fixed cover 5 and is non-rotatably connected or completely fixedly connected to it. The base 221 of the fixed cutting part 21 and the movable cutting part 22 are clamped by the two housing halves, so that the fixed cutting part 21 and the movable cutting part 22 are both installed in the housing 24. In addition, the housing 24 is formed with a receiving annular groove 24c extending along its circumference, and the windings from the main brush 1 can enter and be collected in the receiving annular groove 24c. The multiple fixed teeth 21t of the fixed cutting part 21 are located at the position of the receiving ring groove 24c and the shell 24 can be formed with limiting teeth 24t that overlap and cooperate with the multiple fixed teeth 21t. This is conducive to the winding material entering the receiving ring groove 24c to enter the inter-tooth groove between the multiple fixed teeth 21t, and further facilitates the cutting of the winding material after the movable cutting part 22 and the fixed cutting part 21 generate relative movement.

[0070] In this embodiment, if Figures 1A to 1C As shown, the connecting member 3 is located on the other axial side of the main brush 1 and is fixedly mounted on the other axial end of the main brush 1. The connecting member 3 is used for transmission connection with the power source, so that the torque of the power source can be transmitted to the main brush 1 to drive the main brush 1 to rotate. The blocking ring 4 can be made of foam material and is sleeved on the connecting member 3. The outer diameter of the blocking ring 4 is larger than the outer diameter of the main body 11 of the main brush 1. The outer peripheral surface of the blocking ring 4 is formed with a plurality of teeth spaced apart along the circumferential direction, which can prevent entanglements such as hair from gathering toward the other axial side of the main brush 1 as much as possible. In addition, the fixed cover 5 includes a cover body 51, which is used to be fixedly mounted on the housing 6 of the autonomous mobile device on the one hand, and is non-rotatably mounted together with the groove shaft 23 on the other hand. In this way, the groove shaft 23 cannot rotate relative to the housing 6 via the fixed cover 5.

[0071] By adopting the above technical solution, the movable cutting part 22 of the cutting assembly 2 is installed on the fixed cutting part 21 in a manner that it can move linearly along the axial direction A of the main brush 1, so that when the main brush 1 and the groove shaft 23 generate relative motion, the movable cutting part 22 can perform reciprocating axial linear motion relative to the fixed cutting part 21. As the main brush 1 rotates, the hair rolled up by the main brush 1 can be transported and gathered to the cutting assembly 2 located on one axial side of the main brush 1 and wound around the cutting assembly 2, and then the hair gathered and wound around the cutting assembly 2 is cut off by the cutting assembly 2, thereby preventing the hair from being wound around the roller brush assembly BS or gathered on both sides of the axial direction, thereby avoiding the problem of reduced cleaning ability of the roller brush assembly BS and jamming of the power source driving the roller brush assembly BS.

[0072] The following describes a roller brush assembly BS for an autonomous mobile device according to a second embodiment of the present disclosure in conjunction with the accompanying drawings.

[0073] like Figure 2A and Figure 2B As shown, the structure of the roller brush assembly BS for autonomous mobile equipment according to the second embodiment of the present disclosure is basically the same as the structure of the roller brush assembly BS for autonomous mobile equipment according to the first embodiment of the present disclosure, and the differences between the two are mainly described below.

[0074] In this embodiment, if Figure 2A and Figure 2B As shown, the movable cutting part 22 can swing back and forth around the fulcrum connected to the fixed cutting part 21. In this way, when the main brush 1 and the groove shaft 23 generate relative motion, the inclined annular groove 231c of the groove shaft 23 can drive the movable cutting part 22 to swing back and forth relative to the fixed cutting part 21, thereby achieving the purpose of cutting off the winding. In addition, in this embodiment, the blocking ring 4 located on the other axial side of the main brush 1 can be omitted.

[0075] The following describes a roller brush assembly BS for an autonomous mobile device according to a third embodiment of the present disclosure in conjunction with the accompanying drawings.

[0076] like FIG. 3A to FIG. 3C As shown, the structure of the roller brush assembly BS for autonomous mobile equipment according to the third embodiment of the present disclosure is basically the same as the structure of the roller brush assembly BS for autonomous mobile equipment according to the second embodiment of the present disclosure, and the differences between the two are mainly described below.

[0077] In this embodiment, if FIG. 3A to FIG. 3CAs shown, the fixed cover 5 includes a cover body 51 and an auxiliary cutting portion 52 extending from the cover body 51. The auxiliary cutting portion 52 includes a plurality of limiting teeth that cooperate with the fixed cutting portion 21 and the movable cutting portion 22, and these limiting teeth include a radial tooth 52t1 and a plurality of circumferential teeth 52t2. The radial teeth 52t1 are arranged on the inner circumferential surface of the auxiliary cutting portion 52, and the radial teeth 52t1 are staggered with the fixed teeth 21t and are always staggered with the movable teeth 22t. That is to say, as the main brush 1 rotates, the movable teeth 22t will not interfere with the radial teeth 52t1 in the process of the radial teeth 52t1 passing over the fixed teeth 21t. A plurality of circumferential teeth 52t2 are arranged on both circumferential side edges of the auxiliary cutting portion 52, and a plurality of circumferential teeth 52t2 are arranged at intervals along the axial direction A at each axial end edge. The circumferential teeth 52t2 can limit the windings transported to the axial side of the main brush 1 (it can also be said that the windings are hung), thereby facilitating the fixed cutting part 21 and the movable cutting part 22 to cut the windings. If the circumferential teeth 52t2 are not provided, the windings may shake, which is not conducive to the windings entering the cutting position. The radial teeth 52t1 are used to facilitate the accumulation of debris generated after the windings are cut at the cutting position. After the debris accumulates to a certain extent, it can be sucked away by the autonomous moving device, thereby reducing or even eliminating the possibility that the windings are cut into pieces but remain at the cutting position and cannot be sucked away.

[0078] The following describes a roller brush assembly BS for an autonomous mobile device according to a fourth embodiment of the present disclosure in conjunction with the accompanying drawings.

[0079] like FIG. 4A to FIG. 4C As shown, the structure of the roller brush assembly BS for autonomous mobile equipment according to the fourth embodiment of the present disclosure is basically the same as the structure of the roller brush assembly BS for autonomous mobile equipment according to the second embodiment of the present disclosure, and the differences between the two are mainly described below.

[0080] In this embodiment, if Figure 4A and Figure 4B As shown, the fixed cover 5 further includes a first stopper 53 provided on the cover body 51. The first stopper 53 includes a stopper tooth 53t, which can be positioned in the axial direction A to extend into the inter-tooth groove of the fixed cutting portion 21 closest to the main brush 1, and the stopper tooth 53t is staggered with the fixed teeth 21t and is always staggered with the movable teeth 22t. That is, as the main brush 1 rotates, the movable teeth 22t will not interfere with the stopper tooth 53t in the process of the stopper tooth 53t passing over the fixed teeth 21t. In this way, the stopper tooth 53t can achieve a similar or identical function to the radial teeth 52t1.

[0081] In this embodiment, if Figure 4A and Figure 4BAs shown, the fixed cover 5 also includes two second stoppers 54 provided on the cover body 51, the two second stoppers 54 are arranged spaced apart from the auxiliary cutting portion 52, and the two second stoppers 54 are arranged spaced apart by 180 degrees at a central angle. Each second stopper 54 is formed as a block-shaped cantilever structure, and each second stopper 54 is positioned radially outward of the fixed cutting portion 21. In this way, the second stoppers 54 can prevent the windings from being delivered to the fixed cutting portion 21 too much at one time, thereby preventing the roller brush assembly BS from being stuck by the windings.

[0082] In this embodiment, if Figure 4C As shown, the cover body 51 includes an end cover portion 511 and a bottom shell portion 512 fixed to each other, the end cover portion 511 is non-rotatably mounted with the slot shaft 23 from one axial side, the bottom shell portion 512 extends along the axial direction to partially cover the main brush 1, and the bottom shell portion 512 is provided with a plurality of first comb teeth 512t at at least one side edge thereof, and the plurality of first comb teeth 512t are arranged at intervals in the axial direction A. In this way, the bottom shell portion 512 can be used to protect the main brush 1, and the first comb teeth 512t are conducive to improving the cutting ability of entangled objects. Moreover, the autonomous mobile device body MB of the autonomous mobile device including the roller brush assembly BS according to the present disclosure includes a casing 6 and a mounting cover 7 assembled together (see Figure 5B ), the housing 6 is formed with a mounting recess 6c for mounting the roller brush assembly BS, the mounting cover 7 is mounted at the opening of the mounting recess 6c and is formed with a cover opening 7o, the mounting cover 7 is provided with a plurality of second comb teeth 7t at the side edge of the cover opening 7o, and the plurality of second comb teeth 7t are arranged at intervals in the axial direction A. In this way, the second comb teeth 7t can achieve a similar or identical function to the radial teeth 52t1.

[0083] In addition, if Figure 5A and Figure 5BAs shown, the present disclosure also provides an autonomous mobile device. The autonomous mobile device according to one embodiment of the present disclosure is a self-moving cleaning device with a dry cleaning component. The autonomous mobile device includes an autonomous mobile device body MB and a roller brush assembly BS for an autonomous mobile device according to the present disclosure. A mounting recess 6c is formed at the bottom of the autonomous mobile device body MB, and the main brush 1 is accommodated and mounted in the mounting recess 6c. The autonomous mobile device body MB is formed with a dust suction port 6p facing the main brush 1, and the length of the dust suction port 6p is greater than 80% of the axial length of the main brush 1. In this way, the foreign matter rolled up by the main brush 1 and the cut entanglement debris can be sucked into the interior of the autonomous mobile device as much as possible. Specifically, the autonomous mobile device body MB includes a housing 6 and a mounting cover 7 assembled together. The housing 6 has a generally cylindrical shape as a whole, and in other optional schemes, the housing 6 may also have other shapes, such as D-shaped, oval, square, etc. The bottom surface of the housing 6 is opposite to the traveling surface (such as the surface to be cleaned), and the bottom surface of the housing 6 is parallel to the traveling surface. Here, "parallel" not only includes the situation that the bottom surface of the housing 6 and the traveling surface have a geometric parallel relationship, but also includes the situation that the two are roughly parallel. The above "roughly" means that within the reasonable error range recognized by those skilled in the art, it can be determined that the parallel relationship between the two is established. In addition, other components of the autonomous mobile device can be set in the housing 6. In order to support and protect other components, most of the structures of the autonomous mobile device are installed inside or on the surface of the housing 6, or have a connection relationship with the housing 6. The autonomous mobile device can also be provided with a processing unit and a sensing component in the housing 6. The processing unit can obtain environmental parameters through the sensing component, and the processing unit can control the wheel assembly to drive the entire autonomous mobile device to move autonomously on the traveling surface based on the obtained environmental parameters, and then in this process, the traveling surface is cleaned by the dry cleaning component and / or the wet cleaning component. In different working modes, the cleaning operation includes but is not limited to one or more operations such as sweeping, mopping, and vacuuming. The mounting recess 6c is formed in the housing 6, and the mounting cover 7 is mounted at the opening of the mounting recess 6c and has a cover opening 7o. The main brush 1 of the roller brush assembly BS can extend through the cover opening 7o to contact the surface to be cleaned, thereby using the main brush 1 to achieve cleaning operations.

[0084] It should be understood that the above embodiments are merely exemplary and are not intended to limit the present disclosure. Those skilled in the art may make various modifications and changes to the above embodiments under the guidance of the present disclosure without departing from the scope of the present disclosure. The following supplementary explanation is provided for the technical solution of the present disclosure.

[0085] i. It can be understood that in addition to the examples of self-moving cleaning devices described in the above specific embodiments, the technical concept of the present disclosure can also be applied to other autonomous mobile devices. The above-mentioned autonomous mobile devices generally refer to intelligent mobile devices that autonomously perform preset tasks, including cleaning robots that implement similar functions to the self-moving cleaning devices described in the above embodiments (such as intelligent sweepers, intelligent floor scrubbers, window cleaning robots), companion mobile robots (such as intelligent electronic pets, nanny robots), service mobile robots (such as reception robots in hotels, inns, and meeting places), industrial inspection intelligent equipment (such as power inspection robots, intelligent forklifts, etc.), security robots (such as household or commercial intelligent guard robots), etc., which are two-dimensional plane mobile robots with wheels or tracks as drive units. Of course, the solution of the present disclosure can also be applied to other fields, which will not be exhaustively described.

[0086] ii. The wheel assembly is used to drive the entire autonomous mobile device to move on the travel surface under the control of the processing unit. In addition, by making the wheels (driving wheels) of the two wheel assemblies rotate at the same speed and in the same direction (for example, rotating clockwise or counterclockwise at the same time), the autonomous mobile device can be driven to move linearly along the positive forward direction; by making the driving wheels of the two wheel assemblies rotate at different speeds and / or different directions (for example, one driving wheel rotates clockwise and the other driving wheel rotates counterclockwise), the autonomous mobile device can be driven to turn in a direction different from the positive forward direction. Since the autonomous mobile device is also provided with a universal wheel, the universal wheel can support the entire autonomous mobile device no matter how the driving wheel rolls on the surface to be cleaned. In addition, the dry cleaning assembly may include a dust suction unit housed in the housing, which is used to suck the foreign matter rolled up by the main brush 1 under the control of the processing unit, so that the foreign matter can be sucked into the dust collecting device.

[0087] iii. In the first embodiment, in order to limit the relative motion range of the movable cutting part 22 and the fixed cutting part 21 along the axial direction A, the movable cutting part 22 may be provided with a limiting block, and the fixed cutting part 21 may be formed with a limiting groove that cooperates with the limiting block.

[0088] iv. In a variation of the third embodiment, a plurality of auxiliary cutting portions 52 may be included. Figure 3D As shown, two auxiliary cutting parts 52 are arranged at two central angles spaced 180 degrees apart, and each auxiliary cutting part 52 includes radial teeth 52t1 and circumferential teeth 52t2.

Claims

1. A roller brush assembly for an autonomous mobile device, characterized in that: include: a main brush provided with bristles, wherein the main brush is configured to convey a wound object wound around the main brush toward one axial side of the main brush along an axial direction as a conveying direction during rotation of the main brush; as well as A cutting assembly is located on one axial side of the main brush and is installed at the axial end of the main brush. The cutting assembly includes a fixed cutting part and a movable cutting part. Both the fixed cutting part and the movable cutting part are assembled with the main brush. The movable cutting part can generate relative movement relative to the fixed cutting part during the rotation of the main brush to cut off the entanglement.

2. The roller brush assembly for an autonomous mobile device according to claim 1, characterized in that: The cutting assembly also includes a groove shaft, which is formed with an inclined annular groove extending obliquely relative to the circumference of the groove shaft, and one end of the movable cutting part is located in the inclined annular groove, so that the groove shaft and the main brush produce relative movement during the rotation of the main brush, thereby driving the movable cutting part to produce relative movement relative to the fixed cutting part via the inclined annular groove to cut off the entanglement.

3. The roller brush assembly for an autonomous mobile device according to claim 2, characterized in that: The slotted shaft comprises: a shaft main body, the inclined annular groove being formed in the shaft main body; A first shaft end portion is drivingly connected to the first axial end portion of the shaft body portion and inserted and installed in the main brush, so that the groove shaft and the main brush can rotate relative to each other when the first shaft end portion supports the main brush; and The second shaft end portion is fixed to the second axial end portion of the shaft main body portion and is used to non-rotatably mount the slot shaft on the housing of the autonomous mobile device.

4. The roller brush assembly for an autonomous mobile device according to claim 2, characterized in that: The movable cutting part comprises a base part and a bearing part, wherein the bearing part is installed at one end of the base part and is located in the inclined annular groove, and a cutting blade is formed at the other end of the base part.

5. The roller brush assembly for an autonomous mobile device according to claim 2, characterized in that: The cutting assembly also includes a shell, which is fixed to the axial end of the main brush. The slot shaft passes through the shell and is inserted and installed on the main brush. The fixed cutting part and the movable cutting part are both installed on the shell.

6. The roller brush assembly for an autonomous mobile device according to claim 5, characterized in that: The fixed cutting part has a plurality of fixed teeth, and the base part of the movable cutting part has a plurality of movable teeth. The side edge of each movable tooth forms a cutting blade. When the fixed cutting part and the movable cutting part generate relative motion, the movable teeth and the fixed teeth move relative to each other to interlace with each other, thereby cutting off the winding material.

7. The roller brush assembly for an autonomous mobile device according to claim 6, characterized in that: It also includes a fixed cover, which includes a cover body and at least one auxiliary cutting part extending from the cover body, the cover body is non-rotatably installed with the slot shaft, and the auxiliary cutting part includes a limiting tooth that cooperates with the fixed cutting part and the movable cutting part, and the winding object can be limited by the limiting tooth.

8. The roller brush assembly for an autonomous mobile device according to claim 7, characterized in that: Each of the auxiliary cutting parts includes a plurality of the limiting teeth, and the plurality of the limiting teeth include radial teeth and circumferential teeth. The radial teeth are arranged on the inner circumferential surface of the auxiliary cutting part, and the radial teeth are staggered with the fixed teeth and are always staggered with the movable teeth. The circumferential teeth are arranged on the circumferential end edge of the auxiliary cutting part.

9. The roller brush assembly for an autonomous mobile device according to claim 7, characterized in that: The fixed cover further comprises a first stopper provided on the cover body, the first stopper comprising a stopper tooth, the stopper tooth being able to extend into the inter-tooth groove of the fixed cutting part closest to the main brush, the stopper tooth being staggered with the fixed teeth and always staggered with the movable teeth; and / or The fixed cover further includes a second stopper portion provided on the cover body, the second stopper portion being spaced apart from the auxiliary cutting portion and being positioned radially outward of the housing in a cantilever manner.

10. The roller brush assembly for an autonomous mobile device according to claim 7, characterized in that: The cover body includes an end cover part and a bottom shell part fixed to each other, the end cover part is installed on the shell from one axial side and is non-rotatably installed with the slot shaft, the bottom shell part extends along the axial direction to partially cover the main brush, and the bottom shell part is provided with a plurality of first comb teeth at at least one side edge thereof, and the plurality of first comb teeth are arranged at intervals in the axial direction.

11. The roller brush assembly for an autonomous mobile device according to any one of claims 2 to 10, characterized in that: When the main brush and the groove shaft generate relative motion, the movable cutting part can reciprocate relative to the fixed cutting part.

12. The roller brush assembly for an autonomous mobile device according to any one of claims 2 to 10, characterized in that: When the main brush and the slot shaft generate relative motion, the movable cutting part can perform reciprocating axial linear motion relative to the fixed cutting part.

13. The roller brush assembly for an autonomous mobile device according to any one of claims 1 to 10, characterized in that: Also includes: A connecting piece, which is located at the other axial side of the main brush and is fixedly mounted on the axial end of the main brush, and is used for transmission connection with a power source; as well as A blocking ring is sleeved on the connecting piece, and the outer diameter of the blocking ring is greater than the outer diameter of the main body of the main brush.

14. An autonomous mobile device, characterized in that: The invention comprises a roller brush assembly for an autonomous mobile device as described in any one of claims 1 to 13.

15. The autonomous mobile device according to claim 14, characterized in that: The autonomous mobile device body comprises an installation recess formed at the bottom of the autonomous mobile device body, the main brush is accommodated and installed in the installation recess, the autonomous mobile device body is formed with a dust suction port facing the main brush, and the length of the dust suction port is greater than 80% of the axial length of the main brush.

16. The autonomous mobile device according to claim 15, characterized in that: The autonomous mobile device body includes a casing and a mounting cover assembled together, the mounting recess is formed in the casing, the mounting cover is installed at the opening of the mounting recess and has a cover opening, and the mounting cover is provided with a plurality of second comb teeth at the side edge of the cover opening, and the plurality of second comb teeth are arranged at intervals in the axial direction.

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