# US 11,896,189 B2 · Self-moving cleaning device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,896,189 B2 - Document ID: US11896189B2 - Status: Granted - Kind: B2 - Application number: 17/562,305 - Filed: 2021-12-27 - Published: 2023-01-26 - Granted: 2024-02-13 - Earliest claimed: 2021-07-22 - Assignees: Hobot Technology Inc. - Applicants: Hobot Technology Inc. - Inventors: Chia-Chin Lin; Chao-Kuo Yueh; Wei-Bo Ding; Chun-Yao Chen - Web page: https://patentgrep.com/patent/US11896189B2 ## CPC - A47L 9/04: with driven brushes or agitators - A47L 9/0477: {Rolls} - A47L 9/1409: {Rigid filtering receptacles (dust collecting receptacles for cyclones A47L9/1683)} - A47L 9/2842: {Suction motors or blowers} - A47L 9/2847: {Surface treating elements} - A47L 9/2852: {Elements for displacement of the vacuum cleaner or the accessories therefor, e.g. wheels, casters or nozzles} - A47L 11/20: combined with vacuum cleaning devices - A47L 11/282: having rotary tools - A47L 11/4011: {Regulation of the cleaning machine by electric means; Control systems and remote control systems therefor} - A47L 11/4041: {Roll shaped surface treating tools} - A47L 11/4058: {for adjusting the height of the tool} - A47L 11/4088: {Supply pumps; Spraying devices; Supply conduits} - A47L 2201/00: Robotic cleaning machines, i.e. with automatic control of the travelling movement or the cleaning operation - A47L 2201/06: Control of the cleaning action for autonomous devices; Automatic detection of the surface condition before, during or after cleaning - A47L: DOMESTIC WASHING OR CLEANING (brushes A46B; cleaning quantities of bottles or of other hollow articles of one kind B08B9/00; laundry D06F); SUCTION CLEANERS IN GENERAL (cleaning in general B08) ## Abstract A self-moving cleaning device includes: a base; a mobile module adjacent to the base and configured to contact a surface when the self-moving cleaning device moves on the surface; a vacuum module arranged over the base; a dust box arranged over the base and connected to the vacuum module, the dust box including a first opening and a second opening; a first suction port arranged on the base and including a first suction inlet connected to the first opening; a second suction port arranged on the base and including a second suction inlet connected to the second opening, the first suction port disposed between a front side of the base and the second suction port; a roller brush device arranged on the base and within the second suction port; and an air duct, wherein the first suction port is connected to the dust box through the air duct to thereby connect the first suction inlet to the first opening. ## Claims ### Claim 1 A self-moving cleaning device, comprising: a base; a mobile module adjacent to the base and configured to contact a surface when the self-moving cleaning device moves on the surface; a vacuum module arranged over the base; a dust box arranged over the base and connected to the vacuum module, the dust box comprising a first opening and a second opening, wherein the first opening is oriented in a first direction different from a second direction in which the second opening is oriented; a first suction port arranged on the base and comprising a first suction inlet connected to the first opening, wherein the first suction port is free of any bristle or brush blade; a second suction port arranged on the base and comprising a second suction inlet connected to the second opening, the first suction port disposed between a front side of the base and the second suction port; a roller brush device arranged on the base and within the second suction port; and an air duct, wherein the first suction port is connected to the dust box through the air duct to thereby connect the first suction inlet to the first opening, wherein the dust box comprises: a bottom surface, wherein the second opening is higher than the bottom surface by a first distance; and a side wall arranged near the second opening to serve as a barrier wall to surround the second opening from an inside of the dust box so that the side wall and the bottom surface form a debris-accommodating space; and the second suction inlet is adjacent to the first suction inlet, wherein a distance between the first suction inlet and the second suction inlet is equal to or less than 30 mm. ### Claim 2 (depends on 1) The self-moving cleaning device according to claim 1, wherein the air duct comprises a choke valve configured to open or close the air duct to allow or block an entry of an airflow into the first opening. ### Claim 3 (depends on 1) The self-moving cleaning device according to claim 1, wherein: the first opening protrudes forward farther than the second opening, and the first opening and the second opening do not overlap in a vertical direction from a side view respective. ### Claim 4 (depends on 1) The self-moving cleaning device according to claim 1, further comprising a plurality of first blocking sheets disposed between the first suction inlet and the second suction inlet and extending outward from the base to contact the surface when the self-moving cleaning device moves on the surface, wherein a distance between the first suction inlet and the second suction inlet is between 5 mm and 20 mm. ### Claim 5 (depends on 4) The self-moving cleaning device according to claim 4, wherein the plurality of first blocking sheets comprises a first subset and a second subset, and two adjacent first blocking sheets in the first subset or the second subset are separated by a first spacing. ### Claim 6 (depends on 5) The self-moving cleaning device according to claim 5, wherein the first spacing is less than a spacing between the first subset and the second subset; and the first subset and the second subset together form a row, which is parallel to the first suction inlet. ### Claim 7 (depends on 4) The self-moving cleaning device according to claim 4, further comprising a second blocking sheet disposed on a side of the second suction inlet opposite to the first blocking sheets, wherein a length of the second blocking sheet is greater than a length of the first suction inlet. ### Claim 8 (depends on 1) The self-moving cleaning device according to claim 1, further comprising a side brush device disposed on a side of the base, the side brush device comprising a rotating shaft and at least one bristle attached to the rotating shaft, wherein the self-moving cleaning device further comprises a third blocking sheet disposed between the first suction inlet and the front side of the base, and wherein the third blocking sheet is disposed within a radius of rotation of the at least one bristle. ### Claim 9 (depends on 1) The self-moving cleaning device according to claim 1, further comprising a spray module disposed on the base and extending outwardly, wherein the second suction port is disposed between the first suction port and the spray module. ### Claim 10 (depends on 9) The self-moving cleaning device according to claim 9, further comprising a mopping module connected to the base and configured to mop the surface when the self-moving cleaning device moves on the surface, wherein the spray module is disposed between the second suction port and the mopping module, and wherein an area of the second suction port is greater than an area of the first suction port. ### Claim 11 (depends on 10) The self-moving cleaning device according to claim 10, further comprising a lifting device connected to the base and the mopping module, the lifting device configured to move the mopping module close to or away from the base, wherein the mopping module comprises: a cloth seat; and a cloth arranged on a bottom surface of the cloth seat, wherein the lifting device comprises: a crank; a driving device configured to cause a rotation of the crank; and at least one fixing bar straddling the crank and connected to the cloth seat, and wherein the at least one fixing bar is configured to move the cloth seat close to or away from the base through the rotation of the crank. ### Claim 12 (depends on 11) The self-moving cleaning device according to claim 11, wherein the crank comprises: a crankshaft arranged on the base; at least one crank arm connected to the crankshaft; and a gear part arranged on the crankshaft and coupled to the driving device, whereby the driving device causes a rotation of the crankshaft in a clockwise or counterclockwise direction through the gear part, and the driving device moves an end of the at least one crank arm close to or away from the base through the rotation of the crankshaft, wherein, the gear part and the at least one crank arm are disposed on two opposite sides of the crankshaft, the at least one crank arm comprises an abutment member, and the abutment member extends outward from a side of the at least one crank arm in a direction of a longitudinal axis of the crankshaft, and the at least one fixing bar comprises: a horizontal portion straddling the abutment member of the at least one crank arm of the crankshaft; and at least one linking member extending from at least an end of the horizontal portion to a lower side of the self-moving cleaning device, wherein the cloth seat is fastened to the at least one linking member. ### Claim 13 (depends on 12) The self-moving cleaning device according to claim 12, wherein the lifting device further comprises at least one spring connected to the base and the mopping module, wherein the at least one spring is configured to provide a downward force to the mopping module when the self-moving cleaning device moves on the surface, wherein the at least one spring comprises a first spring and a second spring, and the horizontal portion and the abutment member are disposed between the first spring and the second spring from an elevation view. ### Claim 14 A self-moving cleaning device, comprising: a base; a mobile module adjacent to the base and configured to contact a surface when the self-moving cleaning device moves on the surface; a vacuum module arranged over the base; a dust box arranged over the base and connected to the vacuum module, the dust box comprising a first opening and a second opening, wherein the first opening is oriented in a first direction different from a second direction in which the second opening is oriented; a first suction port arranged on the base and comprising a first suction inlet connected to the first opening, wherein the first suction port is free of any bristle or brush blade; a second suction port arranged on the base and comprising a second suction inlet connected to the second opening, the first suction port disposed between a front side of the base and the second suction port; a roller brush device arranged on the base and within the second suction port; and an air duct, wherein the first suction port is connected to the dust box through the air duct to thereby connect the first suction inlet to the first opening, wherein the first opening is disposed over the roller brush device, and the first opening is disposed over the second opening; wherein the dust box comprises: a front side wall; a bottom surface; and an inclined surface between the front side wall and the bottom surface, wherein the second opening is arranged on the inclined surface; wherein a first included angle is formed between the first opening and the bottom surface, and a second included angle is formed between the second opening and the bottom surface of the dust box, wherein the first included angle is greater than the second included angle; wherein the air duct extends, conformal to a shape of a sidewall of the second suction port of the base, from the first suction port to a location over the roller brush device, thereby connecting the air duct to the dust box, wherein a shape of the inclined surface corresponds to a wall of the air duct and conforms to the shape of the sidewall of the second suction port, and the dust box and the second suction port are arrangement in a compact manner. ### Claim 15 A self-moving cleaning device, comprising: a base; a mobile module adjacent to the base and configured to contact a surface when the self-moving cleaning device moves on the surface; a vacuum module arranged over the base; a dust box arranged over the base and connected to the vacuum module, the dust box comprising a first opening and a second opening, wherein the first opening is oriented in a first direction different from a second direction in which the second opening is oriented; a first suction port arranged on the base and comprising a first suction inlet connected to the first opening, wherein the first suction port is free of any bristle or brush blade; a second suction port arranged on the base and comprising a second suction inlet connected to the second opening, the first suction port disposed between a front side of the base and the second suction port; a roller brush device arranged on the base and within the second suction port; and an air duct, wherein the first suction port is connected to the dust box through the air duct to thereby connect the first suction inlet to the first opening, wherein an included angle formed by the first opening and a bottom surface of the dust box is a first acute angle, and an included angle formed by the second opening and the bottom surface of the dust box is a second acute angle, wherein the first acute angle is greater than the second acute angle. ### Claim 16 (depends on 15) The self-moving cleaning device according to claim 15, comprising: a spray module disposed on the base; a mopping module disposed between the base and the surface and configured to contact the surface during operation, wherein the first suction port, the second suction port, the spray module, and the mopping module are arranged in sequence from the front side of the base to a back side of the base; and a controller configured to perform following steps in sequence when the self-moving cleaning device moves on the surface: vacuuming an area through the first suction port; vacuuming the area through the second suction port; performing spraying the area with the spray module; and performing mopping the area with the mopping module. ### Claim 17 (depends on 15) The self-moving cleaning device according to claim 15, wherein the first opening is disposed over the roller brush device, and the first opening is disposed over the second opening; and the second opening is higher than the bottom surface by a first distance. ### Claim 18 (depends on 15) The self-moving cleaning device according to claim 15, wherein the first suction port is connected to the dust box through the air duct so as to connect the first suction inlet to the first opening, and the air duct comprises a choke valve configured to open or close the air duct to allow or block an entry of an airflow to the first opening. ### Claim 19 (depends on 15) The self-moving cleaning device according to claim 15, wherein the air duct comprises a third opening connected to the first suction inlet, wherein an area of the third opening is greater than an area of the first opening. ### Claim 20 (depends on 15) The self-moving cleaning device according to claim 15, further comprising a plurality of first blocking sheets disposed between the first suction inlet and the second suction inlet and extending outward from the base.