Cleaning robot and cleaning system

Abstract

A cleaning robot includes a dust suction assembly including a roller brush assembly, a cavity body, a first blocking member located on a front side and a second blocking member located on a rear side of the roller brush assembly. The roller brush assembly includes a first roller brush and a second roller brush that are longitudinally arranged. Each of the first blocking member and the second blocking member has a free end close to a bottom surface of the dust suction assembly; a distance between the free end of the first blocking member and the bottom surface is a first distance, and a distance between the free end of the second blocking member and the bottom surface is a second distance, both the first distance and the second distance is greater than or equal to 0 and less than 5 mm.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application is a Continuation application of Chinese Patent Application No. CN202410263497.X filed on Mar. 7, 2024, and PCT Application No PCT / CN2023 / 112081 filed on Aug. 9, 2023 which claims the benefit of and priority to Chinese Patent Application No. CN202210948736.6 filed on Aug. 9, 2022, Chinese Patent Application No. CN202211214628.2 filed on Sep. 30, 2022, Chinese Patent Application No. CN202211539105.5 filed on Dec. 2, 2022, Chinese Patent Application No. CN202310180026.8 filed on Feb. 28, 2023, Chinese Patent Application No. CN202310409071.6 filed on Apr. 17, 2023, Chinese Patent Application No. CN202310573562.4, filed on May 20, 2023, all of which are hereby incorporated by reference in their entireties for all purposes as if fully set forth herein.TECHNICAL FIELD

[0002] The present disclosure relates to the field of cleaning technologies, and in particular, to a cleaning robot and a cleaning system.BACKGROUND

[0003] As an intelligent home appliance, a cleaning robot cleans a to-be-cleaned surface of an indoor environment (also referred to as an environmental surface), and plays an increasingly important role in people's daily lives. A robotic vacuum cleaner is used as an example. A working system of the robotic vacuum cleaner usually includes a dust suction system, a walking system, and a power supply system. However, in actual application scenarios of a cleaning robot, there is a problem of a cleaning efficiency being slightly low.SUMMARY

[0004] Based on this, in view of the foregoing problem, it is necessary to provide a dust suction system and a cleaning robot. The structure of a dust suction system is improved to provide a solution to strategically improve the cleaning efficiency of a cleaning robot. Details are described as follows: the present disclosure provides a cleaning robot, where the cleaning robot includes: a body having a front end; a movement assembly, disposed on the body, and supporting and driving the cleaning robot to move on an environmental surface of a to-be-cleaned region; a controller, controlling the cleaning robot to automatically perform cleaning work on the environmental surface; and a dust suction assembly, disposed on the body, and performing cleaning work on the environmental surface, where the dust suction assembly includes a roller brush assembly, a cavity configured to accommodate the roller brush assembly, a first blocking member located on a front side of the roller brush assembly, and a second blocking member located on a rear side of the roller brush assembly; the roller brush assembly includes a first roller brush and a second roller brush, the first roller brush and the second roller brush are longitudinally arranged, and the first roller brush is close to the front end of the body; each of the first blocking member and the second blocking member has a free end close to the environmental surface; and when the cleaning robot is located on a rigid ground, a minimum distance between the free end of the first blocking member and the rigid ground is a first distance, and a minimum distance between the free end of the second blocking member and the rigid ground is a second distance, where the first distance is less than 5 mm, the second distance is less than 5 mm, and a height difference between the first distance and the second distance is within 3 mm, so that when the first roller brush and the second roller brush rotate toward each other in opposite directions, a first air flow flows from an outside of the cavity, under the first blocking member, through a bottom of the first roller brush, and toward a space between the first roller brush and the second roller brush, and a second air flow flows from the outside of the cavity, under the second blocking member, through a bottom of the second roller brush, and toward the space between the first roller brush and the second roller brush.

[0005] The present disclosure provides a cleaning robot, where the cleaning robot includes: a body having a front end; a movement assembly, disposed on the body, and supporting and driving the cleaning robot to move on an environmental surface of a to-be-cleaned region; a controller, controlling the cleaning robot to automatically perform cleaning work on the environmental surface; and a dust suction assembly, disposed on the body, and performing cleaning work on the environmental surface, where the dust suction assembly includes a roller brush assembly, a cavity configured to accommodate the roller brush assembly, a first blocking member located on a front side of the roller brush assembly, and a second blocking member located on a rear side of the roller brush assembly; the roller brush assembly includes a first roller brush and a second roller brush, the first roller brush and the second roller brush are longitudinally arranged, and the first roller brush is close to the front end of the body; each of the first blocking member and the second blocking member has a free end close to the environmental surface; and when the cleaning robot is located on a rigid ground, a first opening portion formed by the free end of the first blocking member and the rigid ground has a first area, and a second opening portion formed by the free end of the second blocking member and the rigid ground has a second area, where a ratio of the first area to the second area ranges from 0.7 to 1.3; and a minimum distance between the free end of the first blocking member and the rigid ground is a first distance, and a minimum distance between the free end of the second blocking member and the rigid ground is a second distance, where the first distance is less than 5 mm, the second distance is less than 5 mm, so that when the first roller brush and the second roller brush rotate toward each other in opposite directions, a first air flow flows from an outside of the cavity, under the first blocking member, through a bottom of the first roller brush, and toward a space between the first roller brush and the second roller brush, and a second air flow flows from the outside of the cavity, under the second blocking member, through a bottom of the second roller brush, and toward the space between the first roller brush and the second roller brush.

[0006] The present disclosure provides a cleaning robot, where the cleaning robot includes: a body having a front end; a movement assembly, disposed on the body, and supporting and driving the cleaning robot to move on an environmental surface of a to-be-cleaned region; a controller, controlling the cleaning robot to automatically perform cleaning work on the environmental surface; and a dust suction assembly, disposed on the body, and performing cleaning work on the environmental surface, where the dust suction assembly includes a roller brush assembly, a cavity configured to accommodate the roller brush assembly, a first blocking member located on a front side of the roller brush assembly, and a second blocking member located on a rear side of the roller brush assembly; the roller brush assembly includes a first roller brush and a second roller brush, the first roller brush and the second roller brush are longitudinally arranged, and the first roller brush is close to the front end of the body; each of the first blocking member and the second blocking member has a free end close to the environmental surface; and when the cleaning robot is located on a rigid ground, a minimum distance between the free end of the first blocking member and the rigid ground is a first distance, and a second distance exists between the free end of the second blocking member and the rigid ground, where the first distance is less than 5 mm, the second distance is less than 5 mm, and a difference value between the first distance and the second distance is within 3 mm, so that when the first roller brush beats the environmental surface to form a first beating region and the second roller brush beats the environmental surface to form a second beating region, a first air flow flows from an outside of the cavity, through the first beating region, and toward a dust inlet of the cavity, and a second air flow flows from the outside of the cavity, through the second beating region, and toward the dust inlet; and the dust inlet is in communication with a dust suction fan that generates a negative pressure.

[0007] The present disclosure provides a cleaning robot, where the cleaning robot includes: a body having a front end; a movement assembly, disposed on the body, and supporting and driving the cleaning robot to move on an environmental surface of a to-be-cleaned region; a controller, controlling the cleaning robot to automatically perform cleaning work on the environmental surface; and a dust suction assembly, disposed on the body, and performing cleaning work on the environmental surface, where the dust suction assembly includes a roller brush assembly, a cavity configured to accommodate the roller brush assembly, a first blocking member located on a front side of the roller brush assembly, and a second blocking member located on a rear side of the roller brush assembly; the roller brush assembly includes a first roller brush and a second roller brush, the first roller brush and the second roller brush are longitudinally arranged, and the first roller brush is close to the front end of the body; each of the first blocking member and the second blocking member has a free end close to the environmental surface; and when the cleaning robot is located on a rigid ground, a first opening portion formed by the free end of the first blocking member and the rigid ground has a first area, and a second opening portion formed by the free end of the second blocking member and the rigid ground has a second area, where a ratio of the first area to the second area ranges from 0.7 to 1.3; and a minimum distance between the free end of the first blocking member and the rigid ground is a first distance, and a second distance exists between the free end of the second blocking member and the rigid ground, where the first distance is less than 5 mm, the second distance is less than 5 mm, so that when the first roller brush beats the environmental surface to form a first beating region and the second roller brush beats the environmental surface to form a second beating region, a first air flow flows from an outside of the cavity, through the first beating region, and toward a dust inlet of the cavity, and a second air flow flows from the outside of the cavity, through the second beating region, and toward the dust inlet; and the dust inlet is in communication with a dust suction fan that generates a negative pressure.

[0008] The present disclosure provides a cleaning robot, where the cleaning robot includes: a body having a front end; a movement assembly, disposed on the body, and supporting and driving the cleaning robot to move on an environmental surface of a to-be-cleaned region; a controller, controlling the cleaning robot to automatically perform cleaning work on the environmental surface; and a dust suction assembly, disposed on the body, and performing cleaning work on the environmental surface, where the dust suction assembly includes a roller brush assembly, a cavity configured to accommodate the roller brush assembly, a first blocking member located on a front side of the roller brush assembly, and a second blocking member located on a rear side of the roller brush assembly; the roller brush assembly includes a first roller brush and a second roller brush, the first roller brush and the second roller brush are longitudinally arranged, and the first roller brush is close to the front end of the body; each of the first blocking member and the second blocking member has a free end close to the environmental surface; and when the cleaning robot is located on a rigid ground, in the first blocking member, a sealing area accounts for 70% or above, and in the second blocking member, a sealing area accounts for 70% or above; a minimum distance between the free end of the first blocking member and the rigid ground is a first distance, and a minimum distance between the free end of the second blocking member and the rigid ground is a second distance, where the first distance is less than 5 mm, and the second distance is less than 5 mm, so that when the first roller brush beats the environmental surface to form a first beating region and the second roller brush beats the environmental surface to form a second beating region, a first air flow flows from an outside of the cavity, through the first beating region, and toward a dust inlet of the cavity, and a second air flow flows from the outside of the cavity, through the second beating region, and toward the dust inlet; and the dust inlet is in communication with a dust suction fan that generates a negative pressure.

[0009] The present disclosure provides a cleaning robot, where the cleaning robot includes: a body having a front end; a movement assembly, disposed on the body, and supporting and driving the cleaning robot to move on an environmental surface of a to-be-cleaned region; a controller, controlling the cleaning robot to automatically perform cleaning work on the environmental surface; and a dust suction assembly, disposed on the body, and performing cleaning work on the environmental surface, where the dust suction assembly includes a roller brush assembly, a cavity configured to accommodate the roller brush assembly, a first blocking member located on a front side of the roller brush assembly, and a second blocking member located on a rear side of the roller brush assembly; the roller brush assembly includes a first roller brush and a second roller brush, the first roller brush and the second roller brush are longitudinally arranged, and the first roller brush is close to the front end of the body; each of the first blocking member and the second blocking member has a free end close to the environmental surface; and when the cleaning robot is located on a rigid ground, an area of an air leakage hole of at least one blocking member in the first blocking member and the second blocking member accounts for 30% or below of an area of the corresponding blocking member; a minimum distance between the free end of the first blocking member and the rigid ground is a first distance, and a minimum distance between the free end of the second blocking member and the rigid ground is a second distance, where the first distance is less than 5 mm, and the second distance is less than 5 mm, so that when the first roller brush beats the environmental surface to form a first beating region and the second roller brush beats the environmental surface to form a second beating region, a first air flow flows from an outside of the cavity, through the first beating region, and toward a dust inlet of the cavity, and a second air flow flows from the outside of the cavity, through the second beating region, and toward the dust inlet; and the dust inlet is in communication with a dust suction fan that generates a negative pressure.

[0010] The present disclosure provides a cleaning robot, where the cleaning robot includes: a body having a front end; a movement assembly, disposed on the body, and supporting and driving the cleaning robot to move on an environmental surface of a to-be-cleaned region; a controller, controlling the cleaning robot to automatically perform cleaning work on the environmental surface; and a dust suction assembly, disposed on the body, and performing cleaning work on the environmental surface, where the dust suction assembly includes a roller brush assembly, a cavity configured to accommodate the roller brush assembly, a first blocking member located on a front side of the roller brush assembly, and a second blocking member located on a rear side of the roller brush assembly; the roller brush assembly includes a first roller brush and a second roller brush, the first roller brush and the second roller brush are longitudinally arranged, and the first roller brush is close to the front end of the body; each of the first blocking member and the second blocking member has a free end close to the environmental surface; and when the cleaning robot is located on a rigid ground, in the first blocking member, a sealing area accounts for over 70%, and in the second blocking member, a sealing area accounts for over 70%; a minimum distance between the free end of the first blocking member and the rigid ground is a first distance, and a minimum distance between the free end of the second blocking member and the rigid ground is a second distance, where the first distance is less than 5 mm, and the second distance is less than 5 mm, so that when the first roller brush and the second roller brush rotate toward each other in opposite directions, a first air flow flows from an outside of the cavity, under the first blocking member, through a bottom of the first roller brush, and toward a space between the first roller brush and the second roller brush, and a second air flow flows from the outside of the cavity, under the second blocking member, through a bottom of the second roller brush, and toward the space between the first roller brush and the second roller brush.

[0011] The present disclosure provides a cleaning robot, where the cleaning robot includes: a body having a front end; a movement assembly, disposed on the body, and supporting and driving the cleaning robot to move on an environmental surface of a to-be-cleaned region; a controller, controlling the cleaning robot to automatically perform cleaning work on the environmental surface; and a dust suction assembly, disposed on the body, and performing cleaning work on the environmental surface, wherein the dust suction assembly includes a roller brush assembly, a cavity configured to accommodate the roller brush assembly, a first blocking member located on a front side of the roller brush assembly, and a second blocking member located on a rear side of the roller brush assembly; the roller brush assembly includes a first roller brush and a second roller brush, the first roller brush and the second roller brush are longitudinally arranged, and the first roller brush is close to the front end of the body; each of the first blocking member and the second blocking member has a free end close to the environmental surface; and when the cleaning robot is located on a rigid ground, an area of an air leakage hole of at least one blocking member in the first blocking member and the second blocking member accounts for 30% or below of an area of the corresponding blocking member; a minimum distance between the free end of the first blocking member and the rigid ground is a first distance, and a minimum distance between the free end of the second blocking member and the rigid ground is a second distance, where the first distance is less than 5 mm, and the second distance is less than 5 mm, so that when the first roller brush and the second roller brush rotate toward each other in opposite directions, a first air flow flows from an outside of the cavity, under the first blocking member, through a bottom of the first roller brush, and toward a space between the first roller brush and the second roller brush, and a second air flow flows from the outside of the cavity, under the second blocking member, through a bottom of the second roller brush, and toward the space between the first roller brush and the second roller brush.

[0012] The present disclosure provides a cleaning robot, where the cleaning robot includes: a body having a front end; a movement assembly, disposed on the body, and supporting and driving the cleaning robot to move on an environmental surface of a to-be-cleaned region; a controller, controlling the cleaning robot to automatically perform cleaning work on the environmental surface; and a dust suction assembly, disposed on the body, and performing cleaning work on the environmental surface, wherein the dust suction assembly includes a roller brush assembly, a cavity configured to accommodate the roller brush assembly, a first blocking member located on a front side of the roller brush assembly, and a second blocking member located on a rear side of the roller brush assembly; the roller brush assembly includes a first roller brush and a second roller brush, the first roller brush and the second roller brush are longitudinally arranged, and the first roller brush is close to the front end of the body; each of the first blocking member and the second blocking member has a free end close to the environmental surface; and when the cleaning robot is located on a rigid ground, a first opening portion formed by the free end of the first blocking member and the rigid ground has a first area, and a second opening portion formed by the free end of the second blocking member and the rigid ground has a second area, where a difference value between the first area and the second area is greater than or equal to 0 and less than 1100 mm2; and a minimum distance between the free end of the first blocking member and the rigid ground is a first distance, and a minimum distance between the free end of the second blocking member and the rigid ground is a second distance, where the first distance is less than 5 mm, the second distance is less than 5 mm, so that when the first roller brush and the second roller brush rotate toward each other in opposite directions, a first air flow flows from an outside of the cavity, under the first blocking member, through a bottom of the first roller brush, and toward a space between the first roller brush and the second roller brush, and a second air flow flows from the outside of the cavity, under the second blocking member, through a bottom of the second roller brush, and toward the space between the first roller brush and the second roller brush.

[0013] The present disclosure provides a cleaning robot, where the cleaning robot includes: a body having a front end; a movement assembly, disposed on the body, and supporting and driving the cleaning robot to move on an environmental surface of a to-be-cleaned region; a controller, controlling the cleaning robot to automatically perform cleaning work on the environmental surface; and a dust suction assembly, disposed on the body, and performing cleaning work on the environmental surface, wherein the dust suction assembly includes a roller brush assembly, a cavity configured to accommodate the roller brush assembly, a first blocking member located on a front side of the roller brush assembly, and a second blocking member located on a rear side of the roller brush assembly; the roller brush assembly includes a first roller brush and a second roller brush, the first roller brush and the second roller brush are longitudinally arranged, and the first roller brush is close to the front end of the body; each of the first blocking member and the second blocking member has a free end close to the environmental surface; and when the cleaning robot is located on a rigid ground, a first opening portion formed by the free end of the first blocking member and the rigid ground has a first area, and a second opening portion formed by the free end of the second blocking member and the rigid ground has a second area, where a difference value between the first area and the second area is greater than or equal to 0 and less than 1100 mm2; and a minimum distance between the free end of the first blocking member and the rigid ground is a first distance, and a minimum distance between the free end of the second blocking member and the rigid ground is a second distance, where the first distance is less than 5 mm, the second distance is less than 5 mm, so that when the first roller brush beats the environmental surface to form a first beating region and the second roller brush beats the environmental surface to form a second beating region, a first air flow flows from an outside of the cavity, through the first beating region, and toward a dust inlet of the cavity, and a second air flow flows from the outside of the cavity, through the second beating region, and toward the dust inlet; and the dust inlet is in communication with a dust suction fan that generates a negative pressure.

[0014] The present disclosure provides a cleaning robot, where the cleaning robot includes: a body having a front end; a movement assembly, disposed on the body, and supporting and driving the cleaning robot to move on an environmental surface of a to-be-cleaned region; a controller, controlling the cleaning robot to automatically perform cleaning work on the environmental surface; and a dust suction assembly, disposed on the body, and performing cleaning work on the environmental surface, wherein the dust suction assembly includes a roller brush assembly, a cavity configured to accommodate the roller brush assembly, a first blocking member located on a front side of the roller brush assembly, and a second blocking member located on a rear side of the roller brush assembly; the roller brush assembly includes a first roller brush and a second roller brush, the first roller brush and the second roller brush are longitudinally arranged, and the first roller brush is close to the front end of the body; each of the first blocking member and the second blocking member has a free end close to the environmental surface; and when the cleaning robot is located on a rigid ground, a first opening portion formed by the free end of the first blocking member and the rigid ground has a first area, and a second opening portion formed by the free end of the second blocking member and the rigid ground has a second area, where a sum value of the first area and the second area is greater than or equal to 0 and less than 2200 mm2.

[0015] The present disclosure provides a cleaning robot, where the cleaning robot includes: a body having a front end; a movement assembly, disposed on the body, and supporting and driving the cleaning robot to move on an environmental surface of a to-be-cleaned region; a controller, controlling the cleaning robot to automatically perform cleaning work on the environmental surface; and a dust suction assembly, disposed on the body, and performing cleaning work on the environmental surface, wherein the dust suction assembly includes a roller brush assembly, a cavity configured to accommodate the roller brush assembly, a first blocking member located on a front side of the roller brush assembly, and a second blocking member located on a rear side of the roller brush assembly; the roller brush assembly includes a first roller brush and a second roller brush, the first roller brush and the second roller brush are longitudinally arranged, and the first roller brush is close to the front end of the body; each of the first blocking member and the second blocking member has a free end close to the environmental surface; and when the cleaning robot is located on a carpet and the free end of the first blocking member and the free end of the second blocking member are in contact with the carpet, a flow rate of an air flow flowing through the inside of the carpet accounts for 70% or above of a flow rate of that flowing out from a dust inlet; and the dust inlet is in communication with a dust suction fan that generates a negative pressure.

[0016] The present disclosure provides a cleaning robot, where the cleaning robot includes: a body having a front end; a movement assembly, disposed on the body, and supporting and driving the cleaning robot to move on an environmental surface of a to-be-cleaned region; a controller, controlling the cleaning robot to automatically perform cleaning work on the environmental surface; and a dust suction assembly, disposed on the body, and performing cleaning work on the environmental surface, wherein the dust suction assembly includes a roller brush assembly, a cavity configured to accommodate the roller brush assembly, a first blocking member located on a front side of the roller brush assembly, and a second blocking member located on a rear side of the roller brush assembly; the roller brush assembly includes a first roller brush and a second roller brush, the first roller brush and the second roller brush are longitudinally arranged, and the first roller brush is close to the front end of the body; each of the first blocking member and the second blocking member has a free end close to the environmental surface; and when the cleaning robot is located on a carpet and the free end of the first blocking member and the free end of the second blocking member are in contact with the carpet, the first roller brush and the second roller brush rotate toward each other in opposite directions, and a sum of flow rates of an air flow that flows through a bottom of the first roller brush and toward a space between the first roller brush and the second roller brush and an air flow that flows through a bottom of the second roller brush and toward the space between the first roller brush and the second roller brush accounts for 70% or above of a flow rate of an air flow that flows to a dust box.

[0017] The present disclosure provides a cleaning robot, where the cleaning robot includes: a body having a front end; a movement assembly, disposed on the body, and supporting and driving the cleaning robot to move on an environmental surface of a to-be-cleaned region; a controller, controlling the cleaning robot to automatically perform cleaning work on the environmental surface; and a dust suction assembly, disposed on the body, and performing cleaning work on the environmental surface, where the dust suction assembly includes a roller brush assembly, a cavity configured to accommodate the roller brush assembly, a first blocking member located on a front side of the roller brush assembly, and a second blocking member located on a rear side of the roller brush assembly; the roller brush assembly includes a first roller brush and a second roller brush, the first roller brush and the second roller brush are longitudinally arranged, and the first roller brush is close to the front end of the body; each of the first blocking member and the second blocking member has a free end close to the environmental surface; and when the cleaning robot is located on a carpet and the free end of the first blocking member and the free end of the second blocking member are in contact with the carpet, a sum of flow rates of an air flow that flows to a dust inlet through a first beating region of the first roller brush and an air flow that flows to the dust inlet through a second beating region of the second roller brush accounts for 70% or above of a flow rate of an air flow that flows out of the dust inlet.

[0018] The present disclosure provides a cleaning robot, where the cleaning robot includes: a body having a front end; a movement assembly, disposed on the body, and supporting and driving the cleaning robot to move on an environmental surface of a to-be-cleaned region; a controller, controlling the cleaning robot to automatically perform cleaning work on the environmental surface; and a dust suction assembly, disposed on the body, and performing cleaning work on the environmental surface, where the dust suction assembly includes a roller brush assembly, a cavity configured to accommodate the roller brush assembly, a first blocking member located on a front side of the roller brush assembly, and a second blocking member located on a rear side of the roller brush assembly; the roller brush assembly includes a first roller brush and a second roller brush, the first roller brush and the second roller brush are longitudinally arranged, and the first roller brush is close to the front end of the body; each of the first blocking member and the second blocking member has a free end close to the environmental surface; and the cleaning robot is located on a carpet, and the free end of the first blocking member and the free end of the second blocking member are in contact with the carpet, to enable a first air flow to flow from an outside of the cavity to a dust inlet of the cavity through an inside of the carpet and a second air flow to flow from the outside of the cavity to the dust inlet through the inside of the carpet, where a range of a ratio of a flow rate of an air flow that flows through the inside of the carpet and toward the dust inlet of the cavity in the first air flow to a flow rate of an air flow that flows through the inside of the carpet and toward the dust inlet in the second air flow ranges from 0.7 to 1.3.

[0019] The present disclosure provides a cleaning robot, where the cleaning robot includes: a body having a front end; a movement assembly, disposed on the body, and supporting and driving the cleaning robot to move on an environmental surface of a to-be-cleaned region; a controller, controlling the cleaning robot to automatically perform cleaning work on the environmental surface; and a dust suction assembly, disposed on the body, and performing cleaning work on the environmental surface, where the dust suction assembly includes a roller brush assembly, a cavity configured to accommodate the roller brush assembly, a first blocking member located on a front side of the roller brush assembly, and a second blocking member located on a rear side of the roller brush assembly; the roller brush assembly includes a first roller brush and a second roller brush, the first roller brush and the second roller brush are longitudinally arranged, and the first roller brush is close to the front end of the body; each of the first blocking member and the second blocking member has a free end close to the environmental surface; and the cleaning robot is located on a carpet, and the free end of the first blocking member and the free end of the second blocking member are in contact with the carpet, to enable a first air flow to flow from an outside of the cavity to a dust inlet of the cavity through an inside of the carpet and a second air flow to flow from the outside of the cavity to the dust inlet through the inside of the carpet, where in the first air flow, a flow rate of an air flow that flows through the inside of the carpet and toward the dust inlet accounts for 70% or above; and in the second air flow, a flow rate of an air flow that flows through the inside of the carpet and toward the dust inlet accounts for 70% or above.

[0020] According to an aspect of the present disclosure, a cleaning robot is provided, where the cleaning robot includes: a body having a front end; a movement assembly, disposed on the body, and supporting and driving the cleaning robot to move on an environmental surface of a to-be-cleaned region; a controller, controlling the cleaning robot to automatically perform cleaning work on the environmental surface; and a dust suction assembly, disposed on the body, and performing cleaning work on the environmental surface, where the dust suction assembly includes a roller brush assembly, a cavity configured to accommodate the roller brush assembly, a first blocking member located on a front side of the roller brush assembly, and a second blocking member located on a rear side of the roller brush assembly; the roller brush assembly includes a first roller brush and a second roller brush, the first roller brush and the second roller brush are longitudinally arranged, and the first roller brush is close to the front end of the body; the dust suction assembly has a bottom surface, and the bottom surface is a surface of the dust suction assembly facing the environmental surface; each of the first blocking member and the second blocking member has a free end close to the bottom surface; and a minimum distance between the free end of the first blocking member and a reference plane is a first reference distance, and a minimum distance between the free end of the second blocking member and the reference plane is a second reference distance, where the reference plane is the bottom surface of the dust suction assembly, the first reference distance is greater than or equal to 0 and less than 5 mm, and the second reference distance is greater than or equal to 0 and less than 5 mm.

[0021] The present disclosure provides a cleaning robot, where the cleaning robot includes: a body having a front end; a movement assembly, disposed on the body, and supporting and driving the cleaning robot to move on an environmental surface of a to-be-cleaned region; a controller, controlling the cleaning robot to automatically perform cleaning work on the environmental surface; and a dust suction assembly, disposed on the body, and performing cleaning work on the environmental surface, where the dust suction assembly includes a roller brush assembly and a cavity configured to accommodate the roller brush assembly; the roller brush assembly includes a first roller brush and a second roller brush, the first roller brush and the second roller brush are longitudinally arranged, and the first roller brush is close to the front end of the body; when a dust suction fan is turned on to make the first roller brush and the second roller brush rotate toward each other in opposite directions, a first air flow flows from an outside of the cavity, through a bottom of the first roller brush, and toward a space between the first roller brush and the second roller brush, and a second air flow flows from the outside of the cavity, through a bottom of the second roller brush, and toward the space between the first roller brush and the second roller brush; and a sum of a flow rate of an air flow that flows through a bottom of the first roller brush and toward a space between the first roller brush and the second roller brush and a flow rate of an air flow that flows through a bottom of the second roller brush and toward the space between the first roller brush and the second roller brush accounts for 70% or above of a flow rate of an air flow that flows into a dust box.

[0022] The present disclosure provides a cleaning robot, where the cleaning robot includes: a body having a front end; a movement assembly, disposed on the body, and supporting and driving the cleaning robot to move on an environmental surface of a to-be-cleaned region; a controller, controlling the cleaning robot to automatically perform cleaning work on the environmental surface; and a dust suction assembly, disposed on the body, and performing cleaning work on the environmental surface, where the dust suction assembly includes a roller brush assembly and a cavity configured to accommodate the roller brush assembly; the roller brush assembly includes a first roller brush and a second roller brush, the first roller brush and the second roller brush are longitudinally arranged, and the first roller brush is close to the front end of the body; the cavity has a dust inlet, and the dust inlet is in communication with the dust suction fan that generates a negative pressure; when the dust suction fan operates, a first air flow flows from an outside of the cavity, through a first beating region of the first roller brush, and toward the dust inlet, and a second air flow flows from the outside of the cavity, through a second beating region of the second roller brush, and toward the dust inlet; and a sum of a flow rate of an air flow that flows to a dust inlet through a first beating region of the first roller brush and a flow rate of an air flow that flows to the dust inlet through a second beating region of the second roller brush accounts for 70% or above of a flow rate of an air flow that flows into the dust inlet.

[0023] The present disclosure provides a cleaning robot, where the cleaning robot includes: a body having a front end; a movement assembly, disposed on the body, and supporting and driving the cleaning robot to move on an environmental surface of a to-be-cleaned region; a controller, controlling the cleaning robot to automatically perform cleaning work on the environmental surface; and a dust suction assembly, disposed on the body, and performing cleaning work on the environmental surface, where the dust suction assembly includes a roller brush assembly, a cavity configured to accommodate the roller brush assembly, a first blocking member located on a front side of the roller brush assembly, and a second blocking member located on a rear side of the roller brush assembly; the roller brush assembly includes a first roller brush and a second roller brush, the first roller brush and the second roller brush are longitudinally arranged, and the first roller brush is close to the front end of the body; each of the first blocking member and the second blocking member has a free end close to the environmental surface; and when the cleaning robot is located on a carpet and the free end of the first blocking member and the free end of the second blocking member are in contact with the carpet, in the first blocking member, a sealing area accounts for over 70%, and in the second blocking member, a sealing area accounts for over 70%.

[0024] The present disclosure provides a cleaning robot, where the cleaning robot includes: a body having a front end; a movement assembly, disposed on the body, and supporting and driving the cleaning robot to move on an environmental surface of a to-be-cleaned region; a controller, controlling the cleaning robot to automatically perform cleaning work on the environmental surface; and a dust suction assembly, disposed on the body, and performing cleaning work on the environmental surface, where the dust suction assembly includes a roller brush assembly, a cavity configured to accommodate the roller brush assembly, a first blocking member located on a front side of the roller brush assembly, and a second blocking member located on a rear side of the roller brush assembly; the roller brush assembly includes a first roller brush and a second roller brush, the first roller brush and the second roller brush are longitudinally arranged, and the first roller brush is close to the front end of the body; each of the first blocking member and the second blocking member has a free end close to the environmental surface; and when the cleaning robot is located on a carpet and the free end of the first blocking member and the free end of the second blocking member are in contact with the carpet, an area of an air leakage hole of at least one blocking member in the first blocking member and the second blocking member accounts for 30% or below of an area of the corresponding blocking member.

[0025] The present disclosure provides a cleaning robot, where the cleaning robot includes: a body having a front end; a movement assembly, disposed on the body, and supporting and driving the cleaning robot to move on an environmental surface of a to-be-cleaned region; a controller, controlling the cleaning robot to automatically perform cleaning work on the environmental surface; and a dust suction assembly, disposed on the body, and performing cleaning work on the environmental surface, where the dust suction assembly includes a roller brush assembly, a cavity configured to accommodate the roller brush assembly, a first blocking member located on a front side of the roller brush assembly, and a second blocking member located on a rear side of the roller brush assembly; the roller brush assembly includes a first roller brush and a second roller brush, the first roller brush and the second roller brush are longitudinally arranged, and the first roller brush is close to the front end of the body; each of the first blocking member and the second blocking member has a free end close to the environmental surface; and when the cleaning robot is located on a rigid ground, a first opening portion formed by the free end of the first blocking member and the rigid ground has a first area, and a second opening portion formed by the free end of the second blocking member and the rigid ground has a second area, where a sum value of the first area and the second area is greater than or equal to 0 and less than 2200 mm2; and a minimum distance between the free end of the first blocking member and the rigid ground is a first distance, and a minimum distance between the free end of the second blocking member and the rigid ground is a second distance, where the first distance is less than 5 mm, the second distance is less than 5 mm, so that when the first roller brush and the second roller brush rotate toward each other in opposite directions, a first air flow flows from an outside of the cavity, under the first blocking member, through a bottom of the first roller brush, and toward a space between the first roller brush and the second roller brush, and a second air flow flows from the outside of the cavity, under the second blocking member, through a bottom of the second roller brush, and toward the space between the first roller brush and the second roller brush.

[0026] The present disclosure provides a cleaning robot, where the cleaning robot includes: a body having a front end; a movement assembly, disposed on the body, and supporting and driving the cleaning robot to move on an environmental surface of a to-be-cleaned region; a controller, controlling the cleaning robot to automatically perform cleaning work on the environmental surface; and a dust suction assembly, disposed on the body, and performing cleaning work on the environmental surface, where the dust suction assembly includes a roller brush assembly, a cavity configured to accommodate the roller brush assembly, a first blocking member located on a front side of the roller brush assembly, and a second blocking member located on a rear side of the roller brush assembly; the roller brush assembly includes a first roller brush and a second roller brush, the first roller brush and the second roller brush are longitudinally arranged, and the first roller brush is close to the front end of the body; each of the first blocking member and the second blocking member has a free end close to the environmental surface; and when the cleaning robot is located on a rigid ground, a first opening portion formed by the free end of the first blocking member and the rigid ground has a first area, and a second opening portion formed by the free end of the second blocking member and the rigid ground has a second area, where a sum value of the first area and the second area is greater than or equal to 0 and less than 2200 mm2; and a minimum distance between the free end of the first blocking member and the rigid ground is a first distance, and a second distance exists between the free end of the second blocking member and the rigid ground, where the first distance is less than 5 mm, the second distance is less than 5 mm, so that when the first roller brush beats the environmental surface to form a first beating region and the second roller brush beats the environmental surface to form a second beating region, a first air flow flows from an outside of the cavity, through the first beating region, and toward a dust inlet of the cavity, and a second air flow flows from the outside of the cavity, through the second beating region, and toward the dust inlet; and the dust inlet is in communication with a dust suction fan that generates a negative pressure.

[0027] The present disclosure provides a cleaning robot, where the cleaning robot includes: a body having a front end; a movement assembly, disposed on the body, and supporting and driving the cleaning robot to move on an environmental surface of a to-be-cleaned region; a controller, controlling the cleaning robot to automatically perform cleaning work on the environmental surface; and a dust suction assembly, disposed on the body, and performing cleaning work on the environmental surface, where the dust suction assembly includes a roller brush assembly, a cavity configured to accommodate the roller brush assembly, a first blocking member located on a front side of the roller brush assembly, and a second blocking member located on a rear side of the roller brush assembly; the roller brush assembly includes a first roller brush and a second roller brush, the first roller brush and the second roller brush are longitudinally arranged, and the first roller brush is close to the front end of the body; each of the first blocking member and the second blocking member has a free end close to the environmental surface; and when the cleaning robot is located on a carpet and a pile length of the carpet is greater than a preset length, the free end of the first blocking member and the free end of the second blocking member are in contact with the carpet, to enable a first air flow to flow from an outside of the cavity to a dust inlet of the cavity through an inside of the carpet and a second air flow to flow from the outside of the cavity to the dust inlet through the inside of the carpet, where a ratio of the first air flow to the second air flow is ranges from 0.7 to 1.3, inclusive.

[0028] The present disclosure provides a cleaning robot, where the cleaning robot includes: a body having a front end; a movement assembly, disposed on the body, and supporting and driving the cleaning robot to move on an environmental surface of a to-be-cleaned region; a controller, controlling the cleaning robot to automatically perform cleaning work on the environmental surface; and a dust suction assembly, disposed on the body, and performing cleaning work on the environmental surface, where the dust suction assembly includes a roller brush assembly, a cavity configured to accommodate the roller brush assembly, a first blocking member located on a front side of the roller brush assembly, and a second blocking member located on a rear side of the roller brush assembly; the roller brush assembly includes a first roller brush and a second roller brush, the first roller brush and the second roller brush are longitudinally arranged, and the first roller brush is close to the front end of the body; each of the first blocking member and the second blocking member has a free end close to the environmental surface; and when the cleaning robot is located on a rigid ground, a first opening portion formed by the free end of the first blocking member and the rigid ground has a first area, and a second opening portion formed by the free end of the second blocking member and the rigid ground has a second area, where a ratio of the first area to the second area ranges from 0.7 to 1.3; and a minimum distance between the free end of the first blocking member and the rigid ground is a first distance, and a second distance exists between the free end of the second blocking member and the rigid ground, where the first distance is less than 5 mm, the second distance is less than 5 mm, and a difference value between the first distance and the second distance is within 3 mm, so that when the first roller brush beats the environmental surface to form a first beating region and the second roller brush beats the environmental surface to form a second beating region, a first air flow flows from an outside of the cavity, through the first beating region, and toward a dust inlet of the cavity, and a second air flow flows from the outside of the cavity, through the second beating region, and toward the dust inlet; and the dust inlet is in communication with a dust suction fan that generates a negative pressure.

[0029] The present disclosure provides a cleaning robot, where the cleaning robot includes: a body having a front end; a movement assembly, disposed on the body, and supporting and driving the cleaning robot to move on an environmental surface of a to-be-cleaned region; a control assembly, controlling the cleaning robot to automatically perform cleaning work on the environmental surface; and a dust suction assembly, disposed on the body, and performing cleaning work on the environmental surface, where the dust suction assembly includes a roller brush assembly, a cavity configured to accommodate the roller brush assembly, a first blocking member located in front of the roller brush assembly, and a second blocking member located behind the roller brush assembly; the roller brush assembly includes a first roller brush and a second roller brush, the first roller brush and the second roller brush are longitudinally arranged, and the first roller brush is close to the front end of the body; each of the first blocking member and the second blocking member has a free end close to the environmental surface; and when the cleaning robot is located on a rigid ground, a first distance exists between the free end of the first blocking member and the rigid ground, and a second distance exists between the free end of the second blocking member and the rigid ground, where the first distance is less than 5 mm, and a second distance is less than 5 mm.

[0030] According to a first aspect of the present disclosure, a cleaning robot is provided. The cleaning robot includes: a body having a front end; a movement assembly, disposed on the body, and supporting and driving the cleaning robot to move on an environmental surface of a to-be-cleaned region; a controller, controlling the cleaning robot to automatically perform cleaning work on the environmental surface; and a dust suction assembly, disposed on the body, and performing cleaning work on the environmental surface, where the dust suction assembly includes a roller brush assembly, a cavity configured to accommodate the roller brush assembly, a first blocking member located on a front side of the roller brush assembly, and a second blocking member located on a rear side of the roller brush assembly; the roller brush assembly includes a first roller brush and a second roller brush, the first roller brush and the second roller brush are longitudinally arranged, and the first roller brush is close to the front end of the body; each of the first blocking member and the second blocking member has a free end close to the environmental surface; and when the cleaning robot is located on a rigid ground, a first opening portion formed by the free end of the first blocking member and the rigid ground has a first area, and a second opening portion formed by the free end of the second blocking member and the rigid ground has a second area, where a ratio of the first area to the second area ranges from 0.7 to 1.3; and a minimum distance between the free end of the first blocking member and the rigid ground is a first distance, and a minimum distance between the free end of the second blocking member and the rigid ground is a second distance, where the first distance is less than 5 mm, the second distance is less than 5 mm, and a height difference between the first distance and the second distance is within 3 mm, so that when the first roller brush and the second roller brush rotate toward each other in opposite directions, a first air flow flows from an outside of the cavity, under the first blocking member, through a bottom of the first roller brush, and toward a space between the first roller brush and the second roller brush, and a second air flow flows from the outside of the cavity, under the second blocking member, through a bottom of the second roller brush, and toward the space between the first roller brush and the second roller brush.

[0031] In some examples, when the cleaning robot is located on a carpet and the free end of the first blocking member and the free end of the second blocking member are in contact with the carpet, the first air flow and the second air flow are allowed to flow through an inside of the carpet centrally.

[0032] In some examples, the cleaning robot includes a dust suction fan, configured to generate a negative pressure; and when the cleaning robot is located on the carpet and the free end of the first blocking member and the free end of the second blocking member are in contact with the carpet, a flow rate of an air flow flowing through the inside of the carpet accounts for 70% or above of a flow rate of an air flow flowing out from a dust inlet of the cavity.

[0033] In some examples, the first distance is greater than or equal to the second distance, and a difference value between the first distance and the second distance is within 2 mm.

[0034] In some examples, a minimum distance between the free end of the first blocking member and a lowest position point of the first roller brush is a third distance, the third distance is less than 15 mm, and the first air flow is guided to the bottom of the first roller brush; and a minimum distance between the free end of the second blocking member and a lowest position point of the second roller brush is a fourth distance, the fourth distance is less than 15 mm, and the second air flow is guided to the bottom of the second roller brush.

[0035] In some examples, a length of a connecting line between the free end of the first blocking member and a lowest position point of the first roller brush is less than a distance between the lowest position point of the first roller brush and a lowest position point of the second roller brush.

[0036] In some examples, the first blocking member has at least a middle point different from the free end of the first blocking member, a distance between the middle point and a lowest position of the first roller brush is greater than the third distance, and a projection of the middle point onto a horizontal plane and the free end point to the lowest position of the first roller brush.

[0037] In some examples, the first distance is less than a distance between a lowest position point of the first roller brush and a lowest position point of the second roller brush.

[0038] In some examples, a first horizontal distance exists between the free end of the first blocking member and an outer contour of the first roller brush, and the first horizontal distance is less than or equal to 5 mm; and a second horizontal distance exists between the free end of the second blocking member and the second roller brush, and the second horizontal distance is less than or equal to 5 mm; or a minimum distance between the free end of the first blocking member and an outer contour of the first roller brush is less than or equal to 4 mm; and a minimum distance between the free end of the second blocking member and an outer contour of the second roller brush is less than or equal to 4 mm.

[0039] In some examples, the cavity has a dust inlet in communication with a dust suction fan; the first roller brush rotates in a first direction, the second roller brush rotates in a second direction, and the second direction and the first direction are opposite and face each other; a first horizontal distance exists between the free end of the first blocking member and the first roller brush to form a first opening / inlet for an air flow to enter, and the first direction hinders an air flow flowing through the first opening / inlet along a space between an outer contour of the first roller brush and the first blocking member toward the dust inlet of the cavity; and a second horizontal distance exists between the free end of the second blocking member and the second roller brush to form a second opening / inlet for an air flow to enter, and the second direction hinders an air flow flowing through the second opening / inlet along a space between an outer contour of the second roller brush and the first blocking member toward the dust inlet.

[0040] In some examples, hardnesses of materials of the first blocking member and the second blocking member are both greater than or equal to 80 HA.

[0041] In some examples, the first blocking member is movable to adjust a distance between the free end of the first blocking member and the rigid ground, providing the first blocking member with a closed state and an open state; when the first blocking member is in the closed state, the first distance exists between the free end of the first blocking member and the rigid ground; and when the first blocking member is in the open state, the distance between the free end of the first blocking member and the rigid ground is greater than the first distance.

[0042] In some examples, the dust suction assembly includes a housing, the housing includes a first roller brush support portion at least partially covering the first roller brush, and the first blocking member is movably disposed on the first roller brush support portion, to block the first roller brush.

[0043] In some examples, the housing further includes a second roller brush support portion at least partially covering the second roller brush, and the second blocking member is a part of the second roller brush support portion, to block the second roller brush; and the first roller brush support portion and the second roller brush support portion surround to form the cavity configured to accommodate the roller brush assembly.

[0044] In some examples, when the first blocking member is in the open state, a difference value between the first air flow and the second air flow is Δ1; and when the first blocking member is in the closed state, and the difference value between the first air flow and the second air flow is Δ2, where Δ2 is less than Δ1.

[0045] In some examples, a degree of vacuum at a position of the cavity when the first blocking member is in the closed state is greater than a degree of vacuum at the same position of the cavity when the first blocking member is in the open state.

[0046] In some examples, when the first blocking member is in the closed state, a dust inlet of the cavity has a first degree of vacuum, and when the first blocking member is in the open state, the dust inlet of the cavity has a second degree of vacuum, where the first degree of vacuum is greater than the second degree of vacuum.

[0047] In some examples, the second blocking member is movable to adjust a distance between the free end of the second blocking member and the rigid ground, providing the second blocking member with a closed state and an open state; when the second blocking member is in the closed state, the second distance exists between the free end of the second blocking member and the rigid ground; and when the second blocking member is in the open state, the distance between the free end of the second blocking member and the rigid ground is greater than the second distance.

[0048] In some examples, the dust suction assembly includes a housing, the housing includes a roller brush support configured to at least partially cover and support the roller brush assembly, and the roller brush support is configured to be vertically floatable relative to a horizontal plane; and the roller brush assembly is disposed on the roller brush support, and the roller brush assembly floats as the roller brush support floats.

[0049] In some examples, the housing includes a roller brush cover, the roller brush cover is disposed on a side of the housing close to the roller brush assembly and facing the environmental surface, the roller brush cover has a connecting portion connected to the roller brush support, and two connecting portions are provided; and in a direction parallel to a rotating axis, the two connecting portions are respectively disposed on two sides of the first blocking member.

[0050] In some examples, the first blocking member is configured to be floatable in a vertical direction.

[0051] In some examples, the first blocking member is configured to synchronously float with the roller brush support.

[0052] In some examples, the first blocking member is disposed on the roller brush support.

[0053] In some examples, the dust suction assembly includes a blocking member drive assembly configured to drive the first blocking member and a roller brush drive assembly configured to drive the roller brush assembly to rotate, and the blocking member drive assembly and the roller brush drive assembly are both disposed on the roller brush support, to enable both the blocking member drive assembly and the roller brush drive assembly to float as the roller brush support floats.

[0054] In some examples, a rib is disposed between the first blocking member and the first roller brush support portion, and the rib is configured to guide a blocking member to move along the first roller brush support portion.

[0055] In some examples, in a length direction between the roller brush assembly, a sealing strip is disposed between the first blocking member and the first roller brush support portion.

[0056] In some examples, the dust suction assembly includes a roller brush motor configured to drive the roller brush assembly to rotate and a drive motor configured to drive the first blocking member to move, and the roller brush motor and the drive motor are arranged at two ends of the roller brush assembly.

[0057] In some examples, the cleaning robot includes a lifting mechanism configured to drive the dust suction assembly to lift, the lifting mechanism includes the drive motor, and the drive motor is further configured to drive the dust suction assembly to rise and fall in a vertical direction.

[0058] In some examples, the first blocking member is rotatable to adjust a height of the free end of the first blocking member relative to the environmental surface, and a rotating axis of the first blocking member does not overlap with a rotating axis of at least one of the first roller brush and the second roller brush.

[0059] In some examples, the dust suction assembly includes a drive system configured to drive the first blocking member to move and a transmission system configured to transfer a driving force of the drive system to the first blocking member; and the drive system includes a drive motor, the transmission system includes a gear set, and a clearance exists between an output shaft of the drive motor and the gear set.

[0060] In some examples, the dust suction assembly has an anti-collision portion, in a direction of the front end of the body, the anti-collision portion has at least a part located at a front portion of the first blocking member, and the part located at the front portion of the first blocking member has no connection relationship with the first blocking member, to contact an obstacle when the cleaning robot collides with the obstacle.

[0061] In some examples, the dust suction assembly includes a housing, the housing has a first roller brush support portion at least partially covering the first roller brush, and the anti-collision portion includes a protrusion disposed on an outer side wall of the first roller brush support portion and protruding from the first blocking member.

[0062] In some examples, the cleaning robot includes a ground type detection apparatus, configured to detect a ground type; and the controller is configured to: when the detection apparatus detects that the ground type is a rigid ground, control the first blocking member to be opened; and when the detection apparatus detects that the ground type is a soft ground, control the first blocking member to be closed.

[0063] In some examples, the cleaning robot includes an environment detection apparatus, configured to detect a foreign object type; and when the cleaning robot performs cleaning work on the soft ground, the controller is at least configured to: when the environment detection apparatus recognizes that the foreign object type is garbage with a size meeting a preset condition, control the first blocking member to switch from the closed state to the open state.

[0064] In some examples, the cleaning robot has a deep cleaning mode and a common cleaning mode, the cleaning robot has a first cleaning parameter in the deep cleaning mode, the cleaning robot has a second cleaning parameter in the common cleaning mode, the first cleaning parameter is different from the second cleaning parameter, and each cleaning parameter includes at least one of the following parameters: a state of the first blocking member, a movement speed, and a fan power; and when the cleaning robot performs a cleaning operation on the soft ground, the controller controls the cleaning robot to switch between the two cleaning modes to alternately perform the cleaning operation.

[0065] In some examples, in the deep cleaning mode, the first blocking member is in the closed state; and in the common cleaning mode, the first blocking member is in the open state.

[0066] In some examples, the controller is configured to control the cleaning robot to perform the deep cleaning mode and the common cleaning mode alternately according to calendar days, and cleaning modes of the cleaning robot are different on two adjacent calendar days; or the controller is configured to control the cleaning robot to perform the deep cleaning mode and the common cleaning mode alternately according to a quantity of times, traversal of the environmental surface completed by the cleaning robot is referred to as one time, and in adjacent two times, cleaning modes of the cleaning robot are different.

[0067] In some examples, when the cleaning robot performs the cleaning operation on the soft ground, the controller controls the cleaning robot to first clean the soft ground in the deep cleaning mode and then perform at least one round of along-the-edge cleaning on the soft ground, and during the first round of along-the-edge cleaning, the cleaning robot is in the common cleaning mode.

[0068] In some examples, a guide surface is defined on an outer side wall of the first blocking member, and the guide surface is obliquely disposed facing the first roller brush and is disposed at an acute angle with respect to a horizontal plane; and the first blocking member is in the closed state, and the guide surface is at least partially closer to the environmental surface relative to a roller brush support.

[0069] In some examples, the cleaning robot includes an environment detection apparatus for detecting an obstacle in an environment; and when the environment detection apparatus recognizes an obstacle with a size meeting a preset condition, the controller controls the first blocking member to be closed.

[0070] In some examples, the cleaning robot includes a fan, and a power of the fan is greater than or equal to 60 W.

[0071] According to another aspect of the present disclosure, a cleaning system is provided, including the foregoing cleaning robot and a base station for parking by the cleaning robot, where the base station is further configured to maintain the cleaning robot.

[0072] In some examples, the cleaning robot includes a dust collection box, and the base station includes a dust collection fan and is configured to perform a dust collection maintenance operation; and when the base station performs a dust collection maintenance on the dust collection box, at least one of the first blocking member and the second blocking member is in an open state.

[0073] In some examples, a filtering apparatus is disposed in the dust collection box, and when the base station performs a dust collection maintenance on the filtering apparatus, the first blocking member and the second blocking member are in a closed state at least part time.

[0074] In some examples, the base station includes an air intake channel, in communication with an outside and at least one clearance at a bottom of the cavity.

[0075] According to another aspect of the present disclosure, a cleaning robot is provided, where the cleaning robot includes: a body having a front end; a movement assembly, disposed on the body, and supporting and driving the cleaning robot to move on an environmental surface of a to-be-cleaned region; a controller, controlling the cleaning robot to automatically perform cleaning work on the environmental surface; and a dust suction assembly, disposed on the body, and performing cleaning work on the environmental surface, where the dust suction assembly includes a roller brush assembly, a cavity configured to accommodate the roller brush assembly, a first blocking member located on a front side of the roller brush assembly, and a second blocking member located on a rear side of the roller brush assembly; the roller brush assembly includes a first roller brush and a second roller brush, the first roller brush and the second roller brush are longitudinally arranged, and the first roller brush is close to the front end of the body; each of the first blocking member and the second blocking member has a free end close to the environmental surface; and when the cleaning robot is located on a carpet and a pile length of the carpet is greater than a preset length, the free end of the first blocking member and the free end of the second blocking member are in contact with the carpet, to enable a first air flow to flow from an outside of the cavity to a dust inlet of the cavity through an inside of the carpet and a second air flow to flow from the outside of the cavity to the dust inlet through the inside of the carpet, where a ratio of the first air flow to the second air flow is ranges from 0.7 to 1.3, inclusive.

[0076] According to another aspect of the present disclosure, a cleaning robot is provided, where the cleaning robot includes: a body having a front end; a movement assembly, disposed on the body, and supporting and driving the cleaning robot to move on an environmental surface of a to-be-cleaned region; a controller, controlling the cleaning robot to automatically perform cleaning work on the environmental surface; and a dust suction assembly, disposed on the body, and performing cleaning work on the environmental surface, where the dust suction assembly includes a roller brush assembly, a cavity configured to accommodate the roller brush assembly, a first blocking member located on a front side of the roller brush assembly, and a second blocking member located on a rear side of the roller brush assembly; the roller brush assembly includes a first roller brush and a second roller brush, the first roller brush and the second roller brush are longitudinally arranged, and the first roller brush is close to the front end of the body; each of the first blocking member and the second blocking member has a free end close to the environmental surface; and when the cleaning robot is located on a rigid ground, a first opening portion formed by the free end of the first blocking member and the rigid ground has a first area, and a second opening portion formed by the free end of the second blocking member and the rigid ground has a second area, where a ratio of the first area to the second area ranges from 0.7 to 1.3; and a minimum distance between the free end of the first blocking member and the rigid ground is a first distance, and a second distance exists between the free end of the second blocking member and the rigid ground, where the first distance is less than 5 mm, the second distance is less than 5 mm, and a difference value between the first distance and the second distance is within 3 mm, so that when the first roller brush beats the environmental surface to form a first beating region and the second roller brush beats the environmental surface to form a second beating region, a first air flow flows from an outside of the cavity, through the first beating region, and toward a dust inlet of the cavity, and a second air flow flows from the outside of the cavity, through the second beating region, and toward the dust inlet; and the dust inlet is in communication with a dust suction fan that generates a negative pressure.

[0077] According to an aspect of the present disclosure, a cleaning system is provided, wherein the cleaning system including a cleaning robot and a base station for parking by the cleaning robot; herein the cleaning robot comprises a dust collection box, a first blocking member and a second blocking member; and the base station comprises a dust collection fan and is configured to perform a dust collection maintenance operation; and when the base station performs a dust collection maintenance on the dust collection box, at least one of the first blocking member and the second blocking member is in an open state.

[0078] In a dust suction system, a cleaning device, and a cleaning system provided in the present disclosure, a sealed adjustment mechanism is disposed based on an original dust suction mechanism to adjust or stabilize at least part time a negative pressure generated at a dust suction port, so that an action region and an action strength of the dust suction port on a cleaning surface in a cleaning process of a cleaning robot, a handheld vacuum cleaner, or another cleaning device can be affected, to strategically improve a cleaning efficiency.BRIEF DESCRIPTION OF THE DRAWINGS

[0079] FIG. 1 is a system block diagram of a cleaning robot of an example in an embodiment of the present disclosure;

[0080] FIG. 2 is a schematic state diagram of a roller brush mechanism cleaning a cleaning surface in existing technologies;

[0081] FIG. 3 is a schematic structural diagram of a cleaning robot according to an embodiment of the present disclosure;

[0082] FIG. 4 is a structural diagram of a dust suction system of an example in an embodiment of the present disclosure;

[0083] FIG. 5 is a structural diagram of a dust suction system of a cleaning robot according to an embodiment of the present disclosure;

[0084] FIG. 6 is a schematic state diagram of a roller brush mechanism cleaning a cleaning surface in an embodiment of the present disclosure;

[0085] FIG. 7 is a schematic diagram of states that respectively correspond to a blocking member of a sealed adjustment mechanism being at a first position and a second position according to an embodiment of the present disclosure;

[0086] FIG. 8 is a schematic diagram of states that respectively correspond to a blocking member of a sealed adjustment mechanism being at a first position and a second position according to an embodiment of the present disclosure;

[0087] FIG. 9 is a structural diagram of a dust suction system of a cleaning robot according to an embodiment of the present disclosure;

[0088] FIG. 10 is a structural diagram of a dust suction system of a cleaning robot according to an embodiment of the present disclosure;

[0089] FIG. 11 is a schematic state diagram of an example of the blocking member of a dust suction system in FIG. 8;

[0090] FIG. 12 is a schematic diagram of an example of the blocking member of a dust suction system in FIG. 8;

[0091] FIG. 13 is a structural diagram of a dust suction system of a cleaning robot according to an embodiment of the present disclosure;

[0092] FIG. 14 is a state diagram of a blocking member of the dust suction system in FIG. 10 being at a first position;

[0093] FIG. 15 is a state diagram of a blocking member of the dust suction system in FIG. 10 being at a second position;

[0094] FIG. 16 is a structural diagram of a dust suction system of a cleaning robot according to an embodiment of the present disclosure;

[0095] FIG. 17 is a schematic diagram of a driving principle of a traction unit in the dust suction system in FIG. 16;

[0096] FIG. 18 is a structural diagram of a dust suction system of a cleaning robot according to an embodiment of the present disclosure;

[0097] FIG. 19 is a schematic diagram of a traction unit of the dust suction system in FIG. 18 performing position switching;

[0098] FIG. 20 is a schematic diagram of a cleaning robot according to an embodiment of the present disclosure;

[0099] FIG. 21 is a schematic diagram of another cleaning robot according to an embodiment of the present disclosure;

[0100] FIG. 22 is a flowchart of a control system of a cleaning robot according to an embodiment of the present disclosure;

[0101] FIG. 23 is a flowchart of a control system of a cleaning robot according to an embodiment of the present disclosure;

[0102] FIG. 24 is a flowchart of a control system of a cleaning robot according to an embodiment of the present disclosure;

[0103] FIG. 25 is a schematic structural diagram of a dust suction system of a cleaning robot when a blocking member is in a closed state according to an embodiment of the present disclosure;

[0104] FIG. 26 is a schematic structural diagram of a dust suction system of a cleaning robot when a blocking member is in a closed state and floats according to an embodiment of the present disclosure;

[0105] FIG. 27 is a schematic structural diagram of a dust suction system of a cleaning robot when a blocking member is in an open state according to an embodiment of the present disclosure;

[0106] FIG. 28 is a schematic structural diagram of a dust suction system of a cleaning robot when a blocking member is in an open state and floats according to an embodiment of the present disclosure;

[0107] FIG. 29 is a schematic diagram of a dust suction system of a cleaning robot when a blocking member is in a closed state according to an embodiment of the present disclosure;

[0108] FIG. 30 is a state diagram of a dust suction system of a cleaning robot when a blocking member is at a second position according to an embodiment of the present disclosure;

[0109] FIG. 31 is a schematic diagram of a dust suction system of a cleaning robot when a blocking member is in an open state according to an embodiment of the present disclosure;

[0110] FIG. 32 is a state diagram of a dust suction system of a cleaning robot when a blocking member is at a first position according to an embodiment of the present disclosure;

[0111] FIG. 33 is a schematic diagram of the blocking member of the dust suction system in FIG. 29 being in the closed state;

[0112] FIG. 34 is a schematic diagram of the blocking member of the dust suction system in FIG. 31 being in the open state;

[0113] FIG. 35 is a schematic structural diagram of a cleaning robot according to the present disclosure;

[0114] FIG. 36 is a schematic structural diagram of a cleaning robot recognizing an obstacle according to the present disclosure;

[0115] FIG. 37 is a schematic structural diagram of a cleaning robot surmounting an obstacle according to the present disclosure;

[0116] FIG. 38 is a logic diagram of a cleaning robot performing a cleaning task on a hard ground according to the present disclosure;

[0117] FIG. 39 is a schematic structural diagram of a cleaning robot performing cleaning along a wall surface according to the present disclosure;

[0118] FIG. 40 is a three-dimensional schematic structural diagram of a cleaning robot according to the present disclosure;

[0119] FIG. 41 is a schematic structural diagram of the cleaning robot in FIG. 40 from a different viewing angle;

[0120] FIG. 42 is a logic diagram of a cleaning robot performing a cleaning task on a soft ground according to the present disclosure;

[0121] FIG. 43 is a schematic diagram of a cleaning robot being on a carpet with a first thickness according to the present disclosure;

[0122] FIG. 44 is a schematic diagram of a cleaning robot being on a carpet with a second thickness according to the present disclosure;

[0123] FIG. 45 is a flowchart of a cleaning robot traveling on a soft ground according to the present disclosure;

[0124] FIG. 46 is a schematic diagram of a cleaning robot cleaning a carpet according to an embodiment of the present disclosure;

[0125] FIG. 47 is a diagram of a speed change of a cleaning robot recognizing large particles on a carpet according to an embodiment of the present disclosure;

[0126] FIG. 48 is a schematic diagram of a cleaning robot encountering a carpet on a floor according to an embodiment of the present disclosure;

[0127] FIG. 49 is a schematic diagram of a cleaning robot encountering a carpet on a floor during cleaning according to an embodiment of the present disclosure;

[0128] FIG. 50 is a schematic diagram of a cleaning system according to an embodiment of the present disclosure;

[0129] FIG. 51 is a schematic diagram of an air intake channel according to an embodiment of the present disclosure;

[0130] FIG. 52 is a schematic structural diagram of a single roller brush with sealing according to the present disclosure;

[0131] FIG. 53 is a schematic structural diagram of double roller brushes without sealing according to the present disclosure;

[0132] FIG. 54 is a schematic structural diagram of double roller brushes with sealing according to the present disclosure;

[0133] FIG. 55 is a schematic structural diagram of a cleaning robot traveling on an uneven ground and a roller brush mechanism being floatable according to the present disclosure;

[0134] FIG. 56 is a schematic structural diagram of a cleaning robot traveling on an even ground and a roller brush mechanism being put down according to the present disclosure;

[0135] FIG. 57 is a schematic structural diagram of another cleaning robot traveling on an even ground and a roller brush mechanism being put down according to the present disclosure;

[0136] FIG. 58 is a schematic cross-sectional view of FIG. 55 in a B-B direction;

[0137] FIG. 59 is a schematic diagram of a blocking member being in an open state according to the present disclosure;

[0138] FIG. 60 is a schematic diagram of a blocking member being in a closed state according to the present disclosure;

[0139] FIG. 61 is a schematic structural diagram of a roller brush mechanism from a first viewing angle according to the present disclosure;

[0140] FIG. 62 is a structural enlarged view of a position I in FIG. 59;

[0141] FIG. 63 is a schematic structural diagram of a roller brush mechanism from another viewing angle according to the present disclosure;

[0142] FIG. 64 is a schematic structural diagram of a roller brush mechanism from a third viewing angle according to the present disclosure;

[0143] FIG. 65 is a schematic structural diagram of a right portion of FIG. 63;

[0144] FIG. 66 is a schematic diagram of a roller brush mechanism in an open state according to the present disclosure;

[0145] FIG. 67 is a schematic diagram of a roller brush mechanism in a state with a roller brush cover removed according to the present disclosure;

[0146] FIG. 68 is a schematic diagram of a roller brush cover according to the present disclosure;

[0147] FIG. 69 is a schematic diagram of details of a dust accommodating space in FIG. 68;

[0148] FIG. 70 is a schematic structural diagram of a position II in FIG. 69;

[0149] FIG. 71 is a bottom view of a cleaning robot according to the present disclosure;

[0150] FIG. 72 is a three-dimensional diagram of a cleaning robot according to the present disclosure;

[0151] FIG. 73 is a schematic structural diagram of a cleaning robot being on a surface of a base station according to the present disclosure;

[0152] FIG. 74 is a schematic structural diagram of a base station according to the present disclosure;

[0153] FIG. 75 is a schematic diagram of an internal structure of a cleaning robot according to the present disclosure;

[0154] FIG. 76 is a schematic structural diagram of a handheld vacuum cleaner according to the present disclosure;

[0155] FIG. 77 is a schematic diagram of a hepa self-maintenance according to the present disclosure;

[0156] FIG. 78 is a schematic diagram of a dust box maintenance according to the present disclosure;

[0157] FIG. 79 is a schematic diagram of a bottom structure of a cleaning robot according to the present disclosure;

[0158] FIG. 80 is a schematic structural diagram of a blocking member being in an open state according to the present disclosure;

[0159] FIG. 81 is a schematic structural diagram of a blocking member being in a closed state according to the present disclosure;

[0160] FIG. 82 is a schematic diagram of a central dust collection process according to the present disclosure;

[0161] FIG. 83 is a schematic diagram of another hepa self-maintenance according to the present disclosure;

[0162] FIG. 84 is a schematic diagram of another dust box maintenance according to the present disclosure;

[0163] FIG. 85 is a schematic structural diagram of a maintenance switch disposed at a channel 1 being in a closed state according to the present disclosure;

[0164] FIG. 86 is a schematic structural diagram of another maintenance switch disposed at a channel 1 being in an open state according to the present disclosure;

[0165] FIG. 87 is a schematic diagram of an arrangement position of still another maintenance switch in an open state according to the present disclosure;

[0166] FIG. 88 is a schematic diagram of an arrangement position of still another maintenance switch in a closed state according to the present disclosure;

[0167] FIG. 89 is a schematic structural diagram of a cleaning robot according to the present disclosure;

[0168] FIG. 90 is another schematic structural diagram of a cleaning robot according to the present disclosure;

[0169] FIG. 91 is still another schematic structural diagram of a cleaning robot according to the present disclosure;

[0170] FIG. 92 is yet another schematic structural diagram of a cleaning robot according to the present disclosure;

[0171] FIG. 93 to FIG. 97 are schematic structural diagrams of blocking members having different shapes according to the present disclosure;

[0172] FIG. 98 and FIG. 99 are schematic diagrams of blocking members having different hole structures according to the present disclosure;

[0173] FIG. 100 and FIG. 101 are respectively schematic structural diagrams of a dust suction assembly when a cleaning robot is located on a hard ground and a soft ground according to the present disclosure;

[0174] FIG. 102 to FIG. 104 are other schematic structural diagrams of a dust suction assembly according to the present disclosure;

[0175] FIG. 105 is a schematic diagram of a roller brush assembly according to the present disclosure, where one of the roller brushes is a pile roller brush; and

[0176] FIG. 106 is a schematic diagram of a roller brush assembly according to the present disclosure, where two roller brushes are pile roller brushes.US_DESCRIPTION_OF_EMBODIMENTS

[0177] Reference Numerals: cleaning robot 100, body 10, sealed adjustment mechanism 11, dust suction port 12, first sensor 101, second sensor 102, dust suction system (also referred to as a dust suction assembly) 1, walking system (also referred to as a movement assembly) 2, controller 3, cavity 4, sensing assembly 5, filtering apparatus 114, maintenance switch 115, scraper 116, dust bag 202, large-size garbage (corresponding to large particles and clumps of hair) 01, first mounting portion 1101, second mounting portion 2102, traction unit 120, capstan 121, rope 122, compression spring 123, linkage 125, cam 126, housing 210, first support portion 2101, second support portion 2103, roller brush assembly 220, front roller brush (corresponding to a first roller brush) 2201, rear roller brush (corresponding to a second roller brush) 2202, roller brush support 230, tooth-shaped boss 2301, fan (also referred to as a negative pressure fan or a dust suction fan) 24, dust collection fan 25, air duct 240, guide portion 111, drive wheel 21, left drive wheel 211, right drive wheel 212, universal wheel 22, dust collection box 103, first roller brush support portion 230A, second roller brush support portion 230B, dust inlet 14, space 14A between an outer contour of a first roller brush and a first blocking member, space 14B between an outer contour of a second roller brush and a second blocking member, blocking member 109, free end 109A of the blocking member, first blocking member 110, free end 110A of the first blocking member, second blocking member 112, free end 112A of the second blocking member, first beating region 100A, second beating region 100B, rigid ground (also referred to as a hard ground) 2A, flexible ground (also referred to as a soft ground) 2B, lowest position point 2201A of the first roller brush, lowest position point 2202A of the second roller brush, connecting line 1C formed between the lowest position point 2201A of the first roller brush and the lowest position point of the second roller brush, first distance 1A, second distance 1B, third distance M1, fourth distance M2, first horizontal distance N1, second horizontal distance N2, fifth distance Y1, and sixth distance Y2.DETAILED DESCRIPTION

[0178] For ease of understanding of the present disclosure, the present disclosure is described more fully below with reference to the related accompanying drawings. Examples of the present disclosure are given in the accompanying drawings. However, the present disclosure may be implemented in many different forms and is not limited to the examples described herein. Rather, these examples are provided for the purpose of providing a more thorough and comprehensive understanding of the disclosure of the present disclosure.

[0179] In the present disclosure, unless otherwise explicitly specified or defined, the terms such as “mount”, “connect”, “connection”, and “fastened” should be understood in a broad sense. For example, the connection may be a fixed connection, a detachable connection, or an integration; or the connection may be a mechanical connection or an electrical connection; or the connection may be a direct connection, an indirect connection through an intermediary, or internal communication between two components or an interaction relationship between two components, unless otherwise explicitly defined. A person of ordinary skill in the art may understand the specific meanings of the foregoing terms in the present disclosure according to specific cases.

[0180] Terms “first” and “second” are used merely for the purpose of description, and shall not be construed as indicating or implying relative importance or implying a quantity of indicated technical features. Therefore, a feature limited by “first” or “second” may explicitly indicate or implicitly include at least one such feature. In the description of the present disclosure, “plurality” means at least two, for example, two, three, etc., unless otherwise expressly and specifically limited.

[0181] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by a person skilled in the art belonging to the present disclosure. The terms used herein in the specification of the present disclosure are for the purpose of describing specific embodiments only and are not intended to limit the present disclosure. The term “and / or” as used herein includes any and all combinations of one or more of the related listed items.

[0182] Technical features involved in different examples of the present disclosure described below may be combined together if there is no conflict.

[0183] The terms in the present disclosure are first briefly described below.

[0184] Cleaning efficiency (CE): If there are 100 units of dust on a to-be-cleaned surface, and after one time of cleaning, 1 unit of dust is cleaned, or in other words, the dust is reduced by 1 unit, it is defined that the cleaning efficiency is 1%.

[0185] Power: Powers in the present disclosure are all rated input powers of energy consuming devices (for example, a fan, a roller brush motor, and a driving motor), unless specially described.

[0186] Rotational speed: Rotational speeds in the present disclosure are all rotational speeds of rotatable devices when being loaded. For example, a rotational speed of a cleaning roller brush is a rotational speed of the cleaning roller brush when contacting a to-be-cleaned floor, unless otherwise specially described.

[0187] Dust agitation: Garbage such as dust, hair, and debris is at least partially separated or temporarily separated from a to-be-cleaned floor.

[0188] Beating frequency: The beating frequency is a quantity of beats on the to-be-cleaned floor within a unit of time.

[0189] A bottom of a roller brush is a space below the roller brush. When a cleaning robot is located on a rigid ground, a degree of interference between the roller brush and the rigid ground is a negative value. That is, a spacing exists between the roller brush and the rigid ground. In this case, the bottom of the roller brush is a space formed by the spacing below the roller brush. When the cleaning robot is located on a flexible ground, a degree of interference between the roller brush and the flexible ground is a positive value. In other words, the roller brush sinks into the flexible ground. In this case, the bottom of the roller brush is an internal space of the flexible ground.

[0190] A beating region is a region formed by a part in which the roller brush is in contact with an environmental surface. When the cleaning robot is located on a rigid ground, a degree of interference between the roller brush and the rigid ground is a negative value. That is, a spacing exists between the roller brush and the rigid ground. The roller brush is not in contact with the rigid ground. In this case, the beating region of the roller brush is 0. Alternatively, when the cleaning robot is located on a rigid ground, a degree of interference between the roller brush and the rigid ground is 0. That is, the roller brush is in perfect contact with the rigid ground. In this case, the beating region of the roller brush is a line. A length of the line is equal to an axial length of the roller brush, and a width of the line is equal to a thickness of bristles or a rubber strip in contact with the rigid ground. When the cleaning robot is located on a flexible ground, a degree of interference between the roller brush and the flexible ground is a positive value. In other words, the roller brush sinks into the flexible ground. In this case, the roller brush is in contact with the flexible ground and has a width. The beating region of the roller brush is a region that has a shape of a rectangle. A length of the rectangle is a length of the roller brush in an axial direction. A width of the rectangle is a length of a connecting line between two points by which a circumference (a circular outer contour) of the roller brush is in contact with a surface of the flexible ground.

[0191] As shown in FIG. 89 to FIG. 102, the present disclosure provides a cleaning robot 100, including: a body 10, having a front end; a movement assembly 2, disposed on the body, and supporting and driving the cleaning robot to move on an environmental surface of a to-be-cleaned region; a controller (not shown), controlling the cleaning robot to automatically perform cleaning work on the environmental surface; and a dust suction assembly 1, disposed on the body, and performing cleaning work on the environmental surface. The dust suction assembly includes a roller brush assembly 220 and a cavity 4 configured to accommodate the roller brush assembly.

[0192] In some examples, the cleaning robot further includes a sensing assembly 5 that performs detection on an environment and sends sensed information to a controller 3 in some embodiments.

[0193] To improve the cleaning efficiency of the cleaning robot, the structure of the dust suction assembly of the cleaning robot is improved, to enable a cleaning effect of the cleaning robot to reach a level equivalent to that of a handheld vacuum cleaner.

[0194] The applicant has improved a dust agitation effect of the cleaning robot. To improve the dust agitation effect, in some examples, the roller brush assembly includes a first roller brush 2201 and a second roller brush 2202, the first roller brush and the second roller brush are longitudinally arranged, and the first roller brush is close to the front end of the body.

[0195] The first roller brush beats the environmental surface to form a first beating region 100A, and the second roller brush beats the environmental surface to form a second beating region 100B.

[0196] In some examples, the first roller brush and the second roller brush rotate toward each other in opposite directions.

[0197] The directions of the two roller brushes are arranged to rotate in opposite directions, to enable air flows on two sides in the front and rear (the front end of the body of the cleaning robot is used as the front) to better flow from an outside of the cavity, under a blocking member, through bottoms of the roller brushes, and toward a space between the two roller brushes.

[0198] In other words, the directions of the roller brushes have the function of promoting the flowing of the air flows in some embodiments, to enable the air flows to better flow through the bottoms of the roller brushes and toward the space between the two roller brushes, thereby keeping the air flows from directly running off through the bottoms of the roller brushes.

[0199] It needs to be noted that in an example of the roller brushes forming the beating regions, the roller brushes beat out garbage from the environmental surface through a beating action, and cleaning efficiency can be improved provided that the air flows can carry garbage agitated by the roller brushes. In other words, the air flows that pass through the beating regions can flow into a dust inlet in other directions. That is, the air flows do not necessarily need to pass through the regions between the two roller brushes to carry away the agitated garbage. For example, air flows further flow into the dust inlet through a space between beating work heads (for example, rubber strips) of the roller brushes or the like in some embodiments. Therefore, in some embodiments, the foregoing arrangement of rotational directions of the roller brushes is also applied to an example in which the roller brushes forming the beating regions as a means for improving the flowing of air flows from the beating regions toward the space between the two roller brushes.

[0200] The cleaning robot uses double roller brushes to perform beating. Compared with a single roller brush, a quantity of beating mechanisms and a beating area are increased, thereby improving the dust agitation effect.

[0201] In consideration of that dust and other garbage agitated by the double roller brushes may fail to be completely sucked in, the cleaning efficiency is not high. Therefore, to suck in dust agitated by the double roller brushes, the applicant has further improved a dust suction effect, to make the dust suction effect adapt to or match the dust agitation effect of the double roller brushes.

[0202] To improve the dust suction effect, in some examples, the sealing performance of the dust suction assembly is improved. To enable an air flow formed by a negative pressure of a dust suction mechanism (for example, a dust suction fan 24) to better flow through required places (for example, a place in which garbage is agitated), for example, flow through a bottom of the roller brush assembly 220, the beating regions (100A, 100B) formed through beating by the roller brush assembly, an inside of a soft ground (for example, a full-piece carpet with straight hair fiber and a thickness value of straight hair being between 5 mm and 15 mm, or the like), even gaps in a hard ground, and the like, to reduce the flowing and loss of an air flow from another place (for example, a place in which garbage is not agitated), so that dust suction energy is effectively improved, and loss of power or energy of the dust suction mechanism is reduced, thereby improving the dust suction effect.

[0203] It may be understood that sealing performance is improved, and a required place (for example, a place in which garbage is agitated) through which an air flow can better flow is represented by at least one of the bottom of the roller brush assembly 220, the beating regions (100A, 100B) formed through beating by the roller brush assembly, the inside of the soft ground (for example, the full-piece carpet with straight hair fiber and the thickness value of straight hair being between 5 mm and 15 mm, or the like), even the gaps in the hard ground, and the like. Therefore, the foregoing manners representing the required place through which an air flow can better flow are replaced or combined with each other in some embodiments. Similarly, an air flow that flows through another place (for example, a place in which garbage is not agitated) is represented by an air flow that does not flow through the bottom of the roller brush assembly 220, does not flow through the beating regions (100A, 100B) formed through beating by the roller brush assembly, or does not flow through the inside of the soft ground.

[0204] Certainly, in some other examples, the dust suction effect can be improved by directly improving a suction force of the dust suction mechanism, for example, by using a fan with a high power (the power is greater than 100 W) is used for a dust suction fan.

[0205] It should be pointed out that another manner of improving the dust suction effect is using a high-power fan. The manner of using a high-power fan is also combined or replaced with the foregoing manner of improving the sealing performance in some embodiments.

[0206] In some examples, the dust suction assembly includes a first blocking member 110 located on a front side of the roller brush assembly and a second blocking member 112 located on a rear side of the roller brush assembly. Each of the first blocking member and the second blocking member has a free end close to the environmental surface.

[0207] A free end of a blocking member 109 (for example, a general name of the first blocking member and the second blocking member) is a lower end face of the blocking member in some embodiments.

[0208] It is considered that the shape of the blocking member is designed as required in some embodiments. For example, in some examples, in a radial direction (a radial cross-section) of a roller brush, the blocking member has a regular structure and extends in one direction (always in a direction toward the environmental surface) in some embodiments. For ease of understanding, for example, the blocking member has a regular arc-shaped structure (referring to FIG. 100 to FIG. 104). The blocking member always extends in a direction from top to bottom toward the environmental surface. In some examples, the blocking member has an irregular multi-section structure. The multi-section structure extends in at least two directions. For ease of understanding, for example, the blocking member includes the foregoing arc-shaped structure (a first section structure) and a tailing structure (a second section structure) that extends outward (in a direction away from the roller brush) or upward (in a direction overlapping the arc-shaped structure) from a tail of the arc-shaped structure. A first section structure extends in a direction toward the environmental surface, and a second section structure extends in a direction away from the environmental surface. It may be understood that a turning point of the two sections of structures of the blocking member is a ground closest end of the blocking member from the environmental surface, and a sealing level of the blocking member for the cavity is represented by the ground closest end in some embodiments.

[0209] In an example, the blocking member is arranged as a stack structure (for example, the blocking member includes at least two layers, for example, a first blocking layer and a second blocking layer, and the two blocking layers are stacked, to enable the blocking member to present a layered effect, where during stacking, the first blocking layer and the second blocking layer are in contact in some embodiments or are not in contact in some embodiments, and this is not limited in the present disclosure), or a step-form structure (for example, the blocking member includes at least two layers, for example, a first blocking layer and a second blocking layer, and the two blocking layers are connected end to end, to enable the blocking member to present a step form). In this case, distances between different layers of the blocking member and the rigid ground are different in some embodiments. For example, a ground clearance of one layer of structure is greater than 5 mm, and a ground clearance of the other layer of structure is less than 5 mm. It may be understood that in this case a ground distance of the blocking member is a distance between the ground closest end of the blocking member and the rigid ground. Therefore, the ground distance of the blocking member is less than 5 mm.

[0210] In summary, the free ends of the first blocking member and the second blocking member close to the environmental surface are ground closest ends of the first blocking member and the second blocking member from the environmental surface, so that sealing levels of blocking members having different shapes for the cavity can be described.

[0211] In the present disclosure, the sealing performance is improved through the blocking member. The first blocking member is disposed on the front side of the roller brush assembly, and the second blocking member is disposed on the rear side of the roller brush assembly. The free ends of the first blocking member and the second blocking member are close to the environmental surface. The first blocking member seals the front of the roller brush assembly, and the second blocking member seals the rear of the roller brush assembly, to enable an air flow outside the cavity to flow through a place beaten by a roller brush on the environmental surface, for example, flow through a bottom or a beating region of the roller brush, thereby carrying away dust agitated by the roller brush.

[0212] The sealing level of the blocking member for the cavity is represented by at least one of the following manners in some embodiments: a distance between the free end (the ground closest end) of the blocking member and a reference target (for example, the rigid ground, a bottom surface of the dust suction assembly, a carpet, or another reference plane), a coverage length (for example, a length of the free end of the blocking member in the axial direction of the roller brush; and a ratio of the length of the free end of the blocking member to the length of the roller brush in the axial direction of the roller brush or a difference value therebetween) of the blocking member for the roller brush, an unsealed area (that is, an area of air leakage) in the blocking member, and a sealed area (an area of the cavity sealed by the blocking member) in the blocking member. The unsealed area in the blocking member is represented by a ratio of an unsealed area in each blocking member in some embodiments, for example, a ratio of an unsealed area in the first blocking member and a ratio of an unsealed area in the second blocking member, or is represented by a total sum of unsealed areas (areas of air leakage holes) of the blocking members in some embodiments, for example, a sum of an opening area in the first blocking member and an opening area in the second blocking member. Similarly, the sealed area in the blocking member is represented by a ratio of a sealed area in each blocking member in some embodiments, for example, a ratio of a sealed area in the first blocking member and a ratio of a sealed area in the second blocking member, or is represented by a total sum of sealed areas of the blocking members in some embodiments, for example, a sum of the sealed area in the first blocking member and the sealed area in the second blocking member.

[0213] It may be understood that when the reference target is a carpet, the free end of the blocking member is in contact with the carpet. In other words, for this carpet, a distance between the free end of the blocking member and the carpet is 0. This is also a manner of representing the sealing level of the blocking member for the cavity.

[0214] It needs to be noted that when being represented by the sealed area in the blocking member and the unsealed area in the blocking member, the sealing level is applicable to different environmental surfaces. In other words, the sealing level represented by the sealed area in the blocking member and the unsealed area in the blocking member is applicable to a soft ground and is also applicable to a hard ground. The sealed area and the unsealed area in the blocking member are related to the distance between the free end of the blocking member and the reference target (for example, the environmental surface) and the length (in an direction of a rotating axis of the roller brush) of the free end of the blocking member. Therefore, sealed areas and unsealed areas of the blocking member in different reference targets (for example, environmental surfaces) are also different. In other words, when the sealing level is represented by the sealed area in the blocking member and the unsealed area in the blocking member, the reference target needs to be specified.

[0215] It should be understood that representation manners of the sealing levels of the blocking member for the cavity are replaced or combined with each other in some embodiments.

[0216] Examples in which the sealing level of the blocking member for the cavity is represented in the foregoing manners are described below.

[0217] In some examples, a sealing level of the cavity by the blocking member is represented by a distance between the free end of the blocking member and the environmental surface in some embodiments.

[0218] When a same cleaning robot is located on different environmental surfaces, for example, a rigid ground, a flexible ground, and even a flexible ground with different thicknesses, distances between a blocking member and the environmental surfaces are different. Especially, when the cleaning robot is located on a flexible ground, due to the weight of the cleaning robot and a surface feature of the flexible ground, the cleaning robot (for example, the movement assembly, or the dust suction assembly) “sinks in” (it means that a degree of interference between the cleaning robot and the environmental surface is a positive value, for example, a degree of interference between the movement assembly, the dust suction assembly, or the like and the environmental surface is a positive value). The cleaning robot (for example, the movement assembly, or the dust suction assembly) usually does not “sink in” the rigid ground. In consideration of this, to improve the reliability of representing a distance between the blocking member and the environmental surface, therefore, in some examples, the sealing level of the cavity by the blocking member (including the first blocking member and the second blocking member) is represented by a distance between the free end of the blocking member and the rigid ground in some embodiments.

[0219] In some examples, when the cleaning robot is located on a rigid ground 2A, a minimum distance between the free end of the first blocking member and the rigid ground (or a plane formed by the movement assembly (for example, two drive wheels 21 and one universal wheel 22) of the cleaning robot) is a first distance 1A, and a minimum distance between the free end of the second blocking member and the rigid ground is a second distance 1B. The first distance is less than 5 mm, and the second distance is less than 5 mm.

[0220] The distance between the blocking member and the rigid ground is set small, to enable the airflow outside the cavity to flow into the cavity in a manner of flowing close to a surface of the rigid ground, which helps to carry away garbage agitated by the roller brush.

[0221] It should be pointed out that in the present disclosure, the ground distance and the degree of interference are two different concepts. A rigid ground is used as an example. Even if interaction occurs between the blocking member and the rigid ground, especially when the blocking member is made of a flexible material, the blocking member is compressed and deformed under the action of the rigid ground, and the degree of interference of the blocking member is a deformation amount of the blocking member due to compression and deformation. In this case, the blocking member and the rigid ground are in a contact state. Therefore, the ground distance between the blocking member and the rigid ground is 0. In addition, due to the action of “sinking”, the degree of interference is denoted by a positive value, and due to the action of “compression”, the degree of interference is denoted by a negative value. In summary, when the cleaning robot is on the rigid ground, the degree of interference and the ground distance of the blocking member are different. Even if on the hard ground, the degree of interference of the blocking member is negative (for example, is compressed and deformed by the hard ground), in this case, the ground distance of the blocking member is still 0. Similarly, on a soft ground, the degree of interference and the ground distance of the blocking member are also different. Even if the degree of interference on the soft ground is positive (for example, because the blocking member “sinks” inside the soft ground), in this case, the ground distance of the blocking member is also 0.

[0222] It is to be noted that, the blocking member has various shapes in some embodiments. For example, the free end of the blocking member (the lower end face of the blocking member) is a horizontal line in an axial direction of the roller brush (as shown in FIG. 93) in some embodiments, or is a straight line that tilts by a particular angle with respect to a horizontal plane (as shown in FIG. 94) in some embodiments, or even includes a wavy shape (as shown in FIG. 95), a tooth shape (a sawtooth shape shown in FIG. 96 or a pulse shape in FIG. 97), a combination of a wavy shape and a tooth shape, and the like in some embodiments. In consideration of this, therefore, distances between the free end of the blocking member and the rigid ground are not the same in some embodiments, and therefore are described through a minimum distance. Moreover, the minimum distance indicates a distance when the blocking member is in a near-ground mode in some other embodiments. Similarly, a distance between the free end of the blocking member and a lowest position point of the roller brush also uses a description manner of a minimum distance below.

[0223] Certainly, fitting, smoothing, and other processing are performed on blocking members with different shapes in some other embodiments. For example, the free end of the blocking member is equivalently considered as a horizontal straight line, to represent a sealing level of the blocking member.

[0224] The first blocking member enables a first air flow (also referred to as a front air flow, 1F) to flow close to the surface of the rigid ground, which helps to carry away garbage agitated by the first roller brush. The second blocking member enables a second air flow (also referred to as a rear air flow, 2F) to flow close to the surface of the rigid ground, which helps to carry away garbage agitated by the second roller brush.

[0225] In this way, the first blocking member and the first roller brush cooperate. For example, the first blocking member guides the first air flow to cooperate with the first roller brush, to enable the first air flow to flow through the first blocking member, a bottom of the first roller brush, or the first beating region of the first roller brush. The first blocking member and the first roller brush cooperate. For example, the second blocking member guides the second air flow to cooperate with the second roller brush. For example, the second air flow flows below the second blocking member, through a bottom of the second roller brush, or the second beating region of the second roller brush.

[0226] It is considered that the sealing level of the blocking member for the cavity needs to be represented by selecting a specific environmental surface (for example, a rigid ground), and the selected specific environmental surface is different from a major working scenario (for example, a soft ground) of the cleaning robot in some embodiments. In view of this, in some examples, the sealing level of the blocking member for the cavity is represented by the distance between the blocking member and a carpet. For example, a carpet is selected. When the cleaning robot is located on the carpet, the blocking member is in contact with the carpet.

[0227] In some examples, the sealing level at which the blocking member can seal the cavity is represented by a relative position relationship between the blocking member and a structural member of the cleaning robot.

[0228] In view of that the blocking member seals the cavity of the dust suction assembly, to represent the sealing level of the blocking member for the cavity more intuitively, in some examples, a structural member of the dust suction assembly is used as a reference target, and the sealing level of the blocking member for the cavity is represented by the distance between the free end of the blocking member and the reference target. It is considered that the dust suction assembly has the bottom surface facing the environmental surface, and the bottom surface does not depend on the environmental surface on which the cleaning robot operates. Therefore, in some examples, the bottom surface of the dust suction assembly is used as a reference plane to represent the sealing level of the blocking member for the cavity. In other words, the sealing level of the blocking member 109 for the cavity is represented by a minimum distance between the free end of the blocking member and the bottom surface of the dust suction assembly in some embodiments. In some examples, each of the first blocking member and the second blocking member has a free end close to the bottom surface of the dust suction assembly. A minimum distance between the free end of the first blocking member and the bottom surface of the dust suction assembly is a first reference distance, and a minimum distance between the free end of the second blocking member and the bottom surface of the dust suction assembly is a second reference distance, where the first reference distance is greater than or equal to 0 and less than 5 mm, and the second reference distance is greater than or equal to 0 and less than 5 mm.

[0229] It needs to be noted that the first reference distance and the second reference distance are only for distinguishing from the first distance and the second distance. Correspondingly, a first reference area and a second reference area are only for distinguishing from a first area and a second area, and should not be understood as a limitation to the present disclosure. In fact, these two groups of terms follow the same principle. The first reference distance, the second reference distance, the first reference area, and the second reference area are correspondingly set with reference to the corresponding first distance, the second distance, the first area, and the second area in some embodiments, and only different reference planes are selected.

[0230] For example, in some examples, a height difference between the first reference distance and the second reference distance is within 3 mm.

[0231] In an example, in some examples, a first opening portion formed by the free end of the first blocking member and the bottom surface (a plane in which the bottom surface is located) of the dust suction assembly has the first reference area, and a second opening portion formed by the free end of the second blocking member and the bottom surface of the dust suction assembly has the second reference area, where a ratio of the first reference area to the second reference area ranges from 0.7 to 1.3. Alternatively, a sum of the first reference area and the second reference area is greater than or equal to 0 and less than 2200 mm2.

[0232] The free ends of the first blocking member and the second blocking member are arranged to be close enough to the bottom surface of the dust suction assembly, so that when the cleaning robot cleans the environmental surface, an air flow outside the cavity can flow into the cavity in a manner of getting close to the environmental surface, which helps to carry away garbage agitated by the roller brush.

[0233] It needs to be noted that in consideration of a traveling direction of the cleaning robot, the bottom surface of the dust suction assembly is a plane parallel to the environmental surface in some embodiments, or is a plane having an inclination angle with respect to the environmental surface in some embodiments, that is, the bottom surface of the dust suction assembly is an inclined plane in some embodiments. In other words, because the bottom surface of the dust suction assembly is designed differently, distances between the free end of the blocking member and the bottom surface are different in some embodiments. Therefore, the bottom surface of the dust suction assembly is a ground closest end (a part of the bottom surface closest to the environmental surface) of the bottom surface. For the reason of using the minimum distance, refer to the description of the related part. Details are not described herein.

[0234] Certainly, in some other examples, another member of the dust suction assembly is used as a reference in some embodiments to represent the sealing level of the blocking member for the cavity. For example, tangential planes (for example, lower tangential planes close to the environmental surface) of an outer contour of the first roller brush and an outer contour of the second roller brush are used as reference planes, and the sealing level is represented by distances between the free end of the blocking member 109 and the (lower) tangential planes of the outer contour of the first roller brush and the outer contour of the second roller brush.

[0235] In addition, in some examples, the sealing level of the cavity is represented by a relative position relationship between the blocking member and another structural member (for example, the movement assembly) of the cleaning robot in some embodiments. This is not limited in the present disclosure.

[0236] In some examples, the sealing level is represented by the coverage length (for example, the length of the free end of the blocking member, and the ratio of the length of the free end of the blocking member to the length of the roller brush) of the blocking member for the roller brush. Therefore, in some examples, the sealing level is represented by the ratio of the length of the free end of the blocking member to the length of the roller brush. For example, the ratio of the length of the free end of the blocking member to the length of the roller brush in the axial direction of the roller brush is greater than or equal to 50%. Further, the ratio of the length of the free end of the blocking member to the length of the roller brush is greater than or equal to 60%; and furthermore, the ratio of the length of the free end of the blocking member to the length of the roller brush is greater than or equal to 70%. In some embodiments, the ratio of the length of the free end of the blocking member to the length of the roller brush ranges from 80% to 100%.

[0237] For example, the blocking member includes the first blocking member and the second blocking member. For example, in some examples, in the axial direction of the roller brush, a ratio of a length of the free end of the first blocking member to a length of the first roller brush is greater than or equal to 50%, and a ratio of a length of the free end of the second blocking member to a length of the second roller brush is greater than or equal to 50%. Further, the ratio of the length of the free end of the first blocking member to the length of the first roller brush is greater than or equal to 60%, and the ratio of the length of the free end of the second blocking member to the length of the second roller brush is greater than or equal to 60%. Furthermore, the ratio of the length of the free end of the first blocking member to the length of the first roller brush is greater than or equal to 70%, and the ratio of the length of the free end of the second blocking member to the length of the second roller brush is greater than or equal to 70%. In some embodiments, the ratio of the length of the free end of the blocking member to the length of the roller brush ranges from 80% to 100%. In some examples, the sealing level is represented by an unsealed area in the blocking member on a rigid ground, for example, is represented by a ratio of an unsealed area in each blocking member. In the first blocking member, the ratio of the unsealed area is within 30%, and in the second blocking member, the ratio of the unsealed area is within 30%. In an example, the sealing level is represented by the total sum of unsealed areas (areas of air leakage holes) of the blocking members. It may be understood that in the first blocking member, the unsealed areas are related to a ground distance of the free end of the first blocking member and a length by which the free end of the first blocking member covers the roller brush. In the second blocking member, the unsealed areas are related to a ground distance of the free end of the second blocking member and a length by which the free end of the second blocking member covers the roller brush. Specifically, a value of the unsealed area in the blocking member is equal to a sum of an area of an opening formed by the free end of the blocking member and the reference plane and an area of a hollowed-out pattern (for example, gaps generated between adjacent teeth when the free end of the blocking member is a plurality of teeth arranged at intervals, a through hole provided in the blocking member, and a notch generated when the length of the blocking member is less than the length of the roller brush) causing air leakage in the blocking member. In other words, a value of the unsealed area in the first blocking member is equal to a sum of the first area and an area of a hollowed-out pattern (for example, gaps generated between adjacent free ends when a plurality of free ends are arranged at intervals, an open hole in the blocking member, and the notch generated when the length of the blocking member is less than the length of the roller brush) causing air leakage in the second blocking member. A value of the unsealed area in the second blocking member is equal to a sum of the second area and an area of a hollowed-out pattern (for example, gaps generated between adjacent free ends when a plurality of free ends are arranged at intervals, an open hole in the blocking member, and the notch generated when the length of the blocking member is less than the length of the roller brush) causing air leakage in the second blocking member. The first area is related to a ground distance of the free end of the first blocking member and a length by which the free end of the first blocking member covers the roller brush. In the second blocking member, the unsealed areas are related to a ground distance of the free end of the second blocking member and a length by which the free end of the second blocking member covers the roller brush.

[0238] In some examples, a value range of the length of the first roller brush is 170 mm to 220 mm, and a value range of the length of the second roller brush is 170 mm to 220 mm. In some examples, the cleaning robot is located on a hard ground, the ground distance of the free end of the first blocking member is greater than or equal to 0 and less than 5 mm, and the ground distance of the free end of the second blocking member is greater than or equal to 0 and less than 5 mm.

[0239] In some examples, the free ends of the first blocking member and the second blocking member are a horizontal line in a length direction of the roller brush. Neither of the first blocking member and the second blocking member is provided with a hollowed-out pattern (that is, the blocking member has no through hole, no gap, and basically covers the entire roller brush in the length direction, that is, the ratio of the length of the free end of the blocking member to the length of the roller brush is approximately 100%).

[0240] In addition, the value of the unsealed area in the first blocking member is equal to the first area: ground distance (0 to 5)*first roller brush (170 to 220). The value of the unsealed area in the second blocking member is equal to the second area: ground distance (0 to 5)*second roller brush (170 to 220). A sum of the unsealed area in the first blocking member and the unsealed area in the second blocking member is greater than or equal to 0 and less than 2200 mm2 (that is, 5*220 mm2+5*220 mm2).

[0241] In some examples, the cleaning robot is located on a hard ground, and a value range of the ground distance of the free end of the first blocking member is 2 mm to 3 mm; a value range of the ground distance of the free end of the second blocking member is 1 mm to 2 mm; the ratio of the length of the free end of the blocking member to the length of the roller brush is 100%; and the value ranges of the length of the first roller brush and the length of the second roller brush are 180 mm to 200 mm.

[0242] In addition, the value of the unsealed area in the first blocking member is: (2 mm to 3 mm)*(180 mm to 200 mm); the value of the unsealed area in the second blocking member is: (1 mm to 2 mm)*(180 mm to 200 mm); and a value of a sum of the unsealed area in the first blocking member and the unsealed area in the second blocking member is 540 mm2 (that is, 2*180+1*180) to 1000 mm2 (that is, 3*200+2*200).

[0243] In some examples, the sealing level is represented by a sealed area in the blocking member on a rigid ground, for example, is represented by a ratio of a sealed area in each blocking member. In the first blocking member, the ratio of the sealed area is 70% or above, and in the second blocking member, the ratio of the sealed area is 70% or above.

[0244] The sealed area in each blocking member is related to factors such as the length of the free end of the blocking member and a height (that is, a distance between the free end of the blocking member and a top end of the blocking member) by which the blocking member covers the cavity. It needs to be pointed out that when the blocking member has a movement stroke (the blocking member is movable), the height by which the blocking member covers the cavity is represented by the movement stroke of the blocking member in some embodiments. Therefore, in some examples, the sealed area in each blocking member is related to the length of the free end of the blocking member and the movement stroke of the blocking member.

[0245] As can be learned from the foregoing relationship, when the blocking member has a movement stroke (the blocking member is movable), the movement stroke of the blocking member is also used to represent the sealing level in some embodiments. In some examples, the movement stroke of the blocking member is greater than or equal to 3 mm; further, the movement stroke of the blocking member is greater than or equal to 5 mm; and furthermore, the movement stroke of the blocking member is greater than or equal to 7 mm.

[0246] For example, the blocking member includes the first blocking member and the second blocking member, and at least one of the first blocking member and the second blocking member is movable, a movement stroke of the movable blocking member is greater than or equal to 3 mm; further, the movement stroke of the movable blocking member is greater than or equal to 5 mm; and furthermore, the movement stroke of the movable blocking member is greater than or equal to 7 mm. For example, in some examples, the first blocking member is movable, and a movement stroke of the first blocking member is greater than or equal to 3 mm; further, the movement stroke of the first blocking member is greater than or equal to 5 mm; and furthermore, the movement stroke of the first blocking member is greater than or equal to 7 mm. In an example, the second blocking member is movable, and a movement stroke of the second blocking member is greater than or equal to 3 mm; further, the movement stroke of the second blocking member is greater than or equal to 5 mm; and furthermore, the movement stroke of the second blocking member is greater than or equal to 7 mm.

[0247] For example, the blocking member includes the first blocking member and the second blocking member, and both the first blocking member and the second blocking member are movable. For example, in some examples, a movement stroke of the first blocking member is greater than or equal to 3 mm, and a movement stroke of the second blocking member is greater than or equal to 3 mm; further, the movement stroke of the first blocking member is greater than or equal to 5 mm, and the movement stroke of the second blocking member is greater than or equal to 5 mm; and furthermore, the movement stroke of the first blocking member is greater than or equal to 7 mm, and the movement stroke of the second blocking member is greater than or equal to 7 mm.

[0248] In the present disclosure, the sealing performance of the cavity is improved in any of the foregoing manners or a combination thereof, and front and rear air flows become close.

[0249] In some examples, the front and rear air flows are equivalent (basically consistent).

[0250] The front and rear air flows being equivalent is represented by at least one of the following manners in some embodiments: (1) comparison between front and rear sealing parameters, for example, a difference value between (or ratio of) the first distance and the second distance, a ratio of (difference value between) a length of the first blocking member and a length of the second blocking member, and a ratio of (difference value between) the movement stroke of the first blocking member and the movement stroke of the second blocking member; (2) comparison between unsealed areas (leakage areas) in front and rear blocking members, for example, a ratio of (difference value between) a leakage area in the first blocking member and a leakage area in the second blocking member, a ratio of (difference value between) a ratio of the leakage area in the first blocking member and a ratio of the leakage area in the second blocking member; (3) comparison between sealed areas in front and rear blocking members, for example, a ratio of (difference value between) a sealed area in the first blocking member and a sealed area in the second blocking member, and a ratio of (difference value between) a ratio of the sealed area in the first blocking member and a ratio of the sealed area in the second blocking member; and (4) comparison between front and rear air flows, for example, a ratio of (difference value between) the first air flow and the second air flow, a ratio of an effective air flow in the first air flow and a ratio of an effective air flow in the second air flow, a ratio of (difference value between) the effective air flow (an air flow that flows through a required place) in the first air flow and the effective air flow in the second air flow, a ratio of a loss air flow (an air flow that does not flow through a required place) in the first air flow and a ratio of a loss air flow in the second air flow, and a ratio of (difference value between) the loss air flow in the first air flow and the loss air flow in the second air flow. It needs to be noted that the foregoing manners representing that the front and rear air flows are equivalent are replaced or combined with each other in some embodiments. In addition, similar to the foregoing, during calculation of a ratio of or difference value between air flows, an air flow parameter includes, for example, a flow rate or energy of an air flow.

[0251] It may be understood that a representation manner of the front and rear air flows being equivalent is further obtained based on the representation manner of the sealing level. Therefore, the representation manner of the front and rear air flows being equivalent and the representation manner of the sealing level are combined in some embodiments. For example, when the blocking member is in contact with a carpet (a representation manner of the sealing level), a ratio (a representation manner of the front and rear air flows being equivalent) of a flow rate of an air flow that flows through a place (for example, flows through the bottom of the roller brush, flows through the beating region formed by the roller brush, or flows inside the carpet) where an air flow needs to flow in an air flow (for example, the first air flow, and the second air flow) outside the cavity and a flow rate of an air flow that flows through the dust inlet in an air flow flowing toward a dust box is combined. The air flow flowing toward the dust box is represented by a flow rate (for example, of an air flow flowing out from the dust inlet) at the dust inlet in communication with the dust box in some embodiments.

[0252] Examples in which the front and rear air flows being equivalent is represented in the foregoing manners are described below. To make the first air flow and the second air flow equivalent, for example, control a difference value between the first air flow and the second air flow within a particular range, in some examples, it can be considered to set the first distance and the second distance approximately the same, or to make a difference value between the first distance and the second distance fall within a predetermined range.

[0253] In some examples, when the cleaning robot is located on the rigid ground, the difference value between the first distance and the second distance is within 3 mm. Further, the difference value between the first distance and the second distance ranges from 0 mm to 2 mm. Furthermore, the difference value between the first distance and the second distance ranges from 0 mm to 1.5 mm.

[0254] In consideration of that the blocking member has various shapes in some embodiments, in some examples, the sealing level of the blocking member is further represented by an area of an opening portion of the blocking member and the rigid ground in some embodiments.

[0255] To represent sealing levels of the cavity by blocking members with different shapes, in some examples, an area of an opening formed by the blocking member and the rigid ground is used for representation in some embodiments. For example, when the cleaning robot is located on the rigid ground, a first opening portion formed by the free end of the first blocking member and the rigid ground has a first area, and a second opening portion formed by the free end of the second blocking member and the rigid ground has a second area.

[0256] To make the front and rear air flows equivalent, in some examples, it is considered that areas of openings between the front and rear blocking members and the environmental surface are defined to be close or a ratio of or a difference value between areas of front and rear openings is kept within a particular range in some embodiments. In some examples, the front and rear air flows being equivalent is represented by a ratio below. A ratio of the first area to the second area ranges from 0.7 to 1.3. Further, the ratio of the first area to the second area ranges from 0.8 to 1.2. Furthermore, the ratio of the first area to the second area ranges from 0.9 to 1.1.

[0257] For example, when the free end of the blocking member has a tooth-shape, the blocking member is located on the hard ground. An end face of the free end with a tooth shape of the blocking member and the hard ground form the first opening portion. An area of the first opening portion is equal to a sum of an area of the tooth shape and an area of an opening formed by a connecting line between end points of a lower surface of the tooth shape and the hard ground.

[0258] It is to be understood that, the free end of the blocking member has a partial tooth shape or another shape in some embodiments. The calculation of an area of an opening portion formed by the free end and the hard ground is similar to that above. Details are not excessively described herein.

[0259] The shape of the blocking member is taken into consideration herein. The sealing levels of the cavity by blocking members in the front and rear are made basically consistent, to enable air flows that enter the cavity from two sides to be close, thereby reducing a difference value between the two air flows in the front and rear.

[0260] A hole is further provided in the blocking member in some embodiments, especially at a position close to the free end. The hole has an elliptical shape or a triangular shape in some embodiments, as shown in FIG. 98 and FIG. 99, and certainly has another shape in some other embodiments. In consideration of this, to represent sealing levels of the cavity by blocking members with different shapes and provided with holes, in some examples, an area of an opening formed by the blocking member and the rigid ground is used in combination with an area of the hole for representation in some embodiments. For example, in a case that a first hole is provided in the first blocking member and the cleaning robot is located on the rigid ground, a first opening portion formed by the free end of the first blocking member and the rigid ground has a first area, and a second opening portion formed by the free end of the second blocking member and the rigid ground has a second area, where a ratio of a sum of the first area and an area of the first hole to the second area ranges from 0.7 to 1.3. Further, the ratio of the sum of the first area and the area of the first hole to the second area ranges from 0.8 to 1.2. Furthermore, the ratio of the sum of the first area and the area of the first hole to the second area ranges from 0.9 to 1.1.

[0261] It is to be understood that, when a second hole is provided in the second blocking member, an area of the second hole needs to be taken into consideration. For example, a ratio of the sum of the first area and the area of the first hole to a sum of the second area and the area of the second hole ranges from 0.7 to 1.3.

[0262] Impacts of the hole in the blocking member and the shape of the blocking member on the sealing level of the cavity are taken into consideration herein. The sealing levels of the cavity by blocking members in the front and rear are made basically consistent, to enable air flows that enter the cavity from two sides to be close or equivalent, thereby reducing a difference value between the two air flows in the front and rear.

[0263] It is considered that in some examples, the leakage area in the second blocking member is 0 in some embodiments. Therefore, to make the front and rear air flows equivalent, in some examples, a difference value between unsealed areas (areas of air leakage holes) between front and rear blocking members is used for representation. It may be understood that in the first blocking member, the unsealed areas are related to a ground distance of the free end of the first blocking member and a length by which the free end of the first blocking member covers the roller brush. In the second blocking member, the unsealed areas are related to a ground distance of the free end of the second blocking member and a length by which the free end of the second blocking member covers the roller brush. In some embodiments, a value range of the length of the first roller brush is 170 mm to 220 mm, and a value range of the length of the second roller brush is 170 mm to 220 mm. In some examples, the cleaning robot is located on a hard ground, the ground distance of the free end of the first blocking member is greater than or equal to 0 and less than 5 mm, and the ground distance of the free end of the second blocking member is greater than or equal to 0 and less than 5 mm.

[0264] In some examples, the free ends of the first blocking member and the second blocking member are a horizontal line in a length direction of the roller brush. Neither of the first blocking member and the second blocking member is provided with a hollowed-out pattern (that is, the blocking member has no through hole, no gap, and basically covers the entire roller brush in the length direction, that is, the ratio of the length of the free end of the blocking member to the length of the roller brush is approximately 100%).

[0265] In addition, the value of the unsealed area in the first blocking member is equal to the first area: ground distance (0 to 5)*first roller brush (170 to 220). The value of the unsealed area in the second blocking member is equal to the second area: ground distance (0 to 5)*first roller brush (170 to 220). A difference value between the unsealed area in the first blocking member and the unsealed area in the second blocking member is greater than or equal to 0 and less than 1100 mm2 (that is, 5*220 mm2).

[0266] In some examples, the cleaning robot is located on a hard ground, and a value range of the ground distance of the free end of the first blocking member is 2 mm to 3 mm; a value range of the ground distance of the free end of the second blocking member is 1 mm to 2 mm; the ratio of the length of the free end of the blocking member to the length of the roller brush is 100%; and the value ranges of the length of the first roller brush and the length of the second roller brush are 180 mm to 200 mm. In this example, the value of the unsealed area in the first blocking member is: (2 mm to 3 mm)*(180 mm to 200 mm); the value of the unsealed area in the second blocking member is: (1 mm to 2 mm)*(180 mm to 200 mm); and the difference value between the unsealed area in the first blocking member and the unsealed area in the second blocking member is −40 mm2 (that is, 2*180-2*200) to 420 mm2 (that is, 3*200-1*180).

[0267] In some examples, the sealing level is represented by the first distance and the second distance, the difference value between the first distance and the second distance (to make the areas of the front and rear openings close) represents that the front and rear air flows are equivalent, and the beating region is used as a representation for a place where an air flow needs to flow. The first distance and the second distance are defined to be very small. For example, the first distance is less than 5 mm, and the second distance is less than 5 mm. The difference value between the first distance and the second distance is defined to be small. For example, the difference value between the first distance and the second distance is within 3 mm. Areas of openings between the blocking members in the front and rear and the environmental surface are defined to be close, so that when the first roller brush beats the environmental surface to form the first beating region and the second roller brush beats the environmental surface to form the second beating region, the first air flow flows from an outside of the cavity, through the first beating region, and toward a dust inlet of the cavity, and the second air flow flows from the outside of the cavity, through the second beating region, and toward the dust inlet.

[0268] The dust inlet is in communication with the dust suction fan that generates a negative pressure in some embodiments.

[0269] In some examples, an area of an air leakage range caused by a shape of or a hole in a blocking member is used to represent a sealing level in some embodiments. A gap that is generated from the shape of the blocking member, the hole in the blocking member, or the like and is used for a gas to flow is referred to as an air leakage hole. For example, an area of the air leakage hole in the blocking member is controlled to be within 30% of an area of the entire blocking member. In some examples, an area of an air leakage hole in at least one blocking member of the blocking members in the front and rear accounts for less than 30% of a total area of the blocking member, to enable a difference between air flows of the blocking members in the front and rear to be controlled within a particular range, so that the air flows in the front and rear are close or equivalent.

[0270] It may be understood that in a case that the blocking member has at least two layers of structures (for example, including the first blocking layer and the second blocking layer), one layer is provided with a hollowed-out pattern (for example, a circular through hole), and the other layer is provided with no hollowed-out pattern, an area causing air leakage by the hollowed-out pattern is an area of a through hole that is in the layer provided with the hollowed-out pattern and is not covered by the other layer without a hollowed-out pattern. In other words, an area of an uncovered through hole is the area of the air leakage hole.

[0271] To make the front and rear air flows equivalent, in some examples, it is considered that sealed areas of the front and rear blocking members are defined to be close or a ratio of or a difference value between ratios of front and rear sealed areas is kept within a particular range in some embodiments. For example, the difference value between the ratios is used to represent that the front and rear air flows are equivalent. In the first blocking member, the ratio of the sealed area ranges from 70% to 100%, in the second blocking member, the ratio of the sealed area ranges from 70% to 100%, and a difference value between the ratio of the sealed area in the first blocking member and the ratio of the sealed area in the second blocking member ranges from −30% to 30%. In an example, the ratio of the ratios is used to represent that the front and rear air flows are equivalent. In the first blocking member, the ratio of the sealed area ranges from 70% to 100%, in the second blocking member, the ratio of the sealed area ranges from 70% to 100%, and the ratio of the ratio of the sealed area in the first blocking member to the ratio of the sealed area in the second blocking member ranges from 0.7 to 1.4.

[0272] To make the front and rear air flows equivalent, in some examples, air flows are used for representation in some embodiments. For example, a ratio of a flow rate of the effective air flow in the first air flow to a flow rate of the effective air flow in the second air flow is used for representation. In some examples, the ratio of the flow rate of the effective air flow in the first air flow to the flow rate of the effective air flow in the second air flow is greater than or equal to 0.7 and is less than or equal to 1.3. The effective air flow in the first air flow is an air flow that flows through a place (represented by the bottom of the first roller brush, the first beating region, or the interior of the carpet) where an air flow needs to flow in the first air flow; and the effective air flow in the second air flow is an air flow that flows through a place (represented by the bottom of the second roller brush, the second beating region, or the interior of the carpet) where an air flow needs to flow in the second air flow.

[0273] In an example, the ratios of the effective air flows in the front and rear air flows are used to represent that the front and rear air flows are equivalent. In some examples, the ratio of the effective air flow in the first air flow is greater than or equal to 70%, and the ratio of the effective air flow in the second air flow is greater than or equal to 70%.

[0274] In an example, the ratios of the loss air flows in the front and rear air flows are used to represent that the front and rear air flows are equivalent. In some examples, the ratio of the loss air flow in the first air flow is less than 30%, and the ratio of the loss air flow in the second air flow is less than 30%.

[0275] In an example, a ratio of (flow rates of) the first air flow and the second air flow is used for representation. In some examples, a ratio of a flow rate of the first air flow to a flow rate of the second air flow is greater than or equal to 0.7 and is less than or equal to 1.3.

[0276] In some examples, the first distance is greater than or equal to the second distance. For example, a value obtained by subtracting the second distance from the first distance ranges from 0 mm to 3 mm. Further, the value obtained by subtracting the second distance from the first distance ranges from 0 mm to 2 mm. Furthermore, the value obtained by subtracting the second distance from the first distance ranges from 0 mm to 1.5 mm.

[0277] In some examples, the first distance is equal to the second distance.

[0278] It is to be noted that, when the first distance is equal to the second distance, flow rates of the first air flow and the second air flow are approximately the same.

[0279] In some examples, the first distance is greater than the second distance.

[0280] In some examples, a value of the first distance ranges from 3 mm to 4 mm. When the cleaning robot is located on a rigid ground, the setting of the first distance allows the passage of garbage (also referred to as small particles) with a size ranging from 2 mm to 3 mm in some embodiments, to improve a collection effect of garbage, thereby improving the cleaning efficiency of the rigid ground.

[0281] In some examples, a value of the second distance ranges from 1 mm to 2 mm, so that the sealing performance of a rear portion of the cavity can be ensured, to enable the second air flow to better flow through the bottom of the second roller brush or the second beating region.

[0282] In some examples, in a case that the cleaning robot is located on a soft ground, the first air flow and the second airflow can centrally flow through a surface of the soft ground or even an inside of the soft ground. The meaning of “centrally” is as follows: An air flow is increased compared with that when no blocking member (or when the blocking member is in an open state as described below) is disposed on the cleaning robot. That is, in a case that the cleaning robot is located on a soft ground, air flow rates of the first air flow and the second air flow flowing through the surface of the soft ground or even the inside of the soft ground are both increased.

[0283] Due to the foregoing “sinking in”, in a case that the cleaning robot is located on a flexible ground, compared with a case in which the cleaning robot is located on a rigid ground, a distance between the blocking member and the flexible ground is further reduced, and the sealing performance is further improved, so that the air flow outside the cavity flows into the cavity in a manner of flowing closer to the surface of the flexible ground or even in a manner of flowing through the inside of the flexible ground, to cooperate with the roller brush assembly in the cavity, thereby implementing a better effect of carrying away garbage agitated by the roller brush. That is, a cleaning efficiency of the cleaning robot on a flexible ground is better than a cleaning efficiency of the cleaning robot on a rigid ground.

[0284] It is to be noted that, when the cleaning robot with improved sealing performance cleans a rigid ground, compared with a cleaning robot without improved sealing performance, a cleaning efficiency is improved to some extent (for example, improved by approximately 5%). When the cleaning robot cleans a soft ground, compared with a cleaning robot without improved sealing performance, a cleaning efficiency is significantly improved (for example, improved by approximately 25%).

[0285] In some examples, for some flexible grounds such as a carpet, channels (clearances in carpet pile) for a gas to flow through exist inside the carpet. In a case that the cleaning robot is located on a flexible ground with an inside allowing a gas to pass through, the first air flow and the second air flow centrally flow through the surface or even inside of the flexible ground in some embodiments, to implement a better cleaning effect.

[0286] Compared with a rigid ground, for a carpet, distances of the free end of the first blocking member and the free end of the second blocking member from a to-be-cleaned surface are further reduced, and the sealing performance is improved, so that the first air flow and the second air flow centrally flow through a surface or even an inside of the carpet in some embodiments. That is, compared with an existing cleaning robot, in a case that the cleaning robot is located on a carpet, an air flow flowing through a surface or an inside of the carpet is increased, which helps to improve a cleaning effect of the carpet.

[0287] In some examples, for a carpet with carpet pile being planted bristles (for example, free ends of produced pile face vertically upward) and a pile length is greater than a length (a preset length), in a case that the cleaning robot is located on the carpet, the free end of the first blocking member and the free end of the second blocking member can be in contact with a surface of the carpet, to enable a first air flow to flow from an outside of the cavity to a dust inlet of the cavity through an inside of the carpet and a second air flow to flow from the outside of the cavity to the dust inlet through the inside of the carpet, where a ratio of the first air flow to the second air flow is greater than or equal to 0.7 and is less than or equal to 1.3.

[0288] For blocking members with different shapes and even provided with holes, on a carpet, free ends of the blocking members are in contact with the carpet in some embodiments, and a preset sealing level is met, so that the first air flow and the second air flow are equivalent.

[0289] In some examples, the pile length of the carpet is greater than or equal to 5 mm and is less than or equal to 15 mm.

[0290] In some examples, the pile length of the carpet is greater than or equal to 5 mm and is less than or equal to 10 mm.

[0291] In some examples, the pile length of the carpet is greater than or equal to 5 mm and is less than or equal to 8 mm.

[0292] For example, in a case that the cleaning robot is located on a full-piece carpet with a pile length greater than or equal to 10 mm, the first air flow and the second air flow centrally flow through an inside of the full-piece carpet, to facilitate cleaning of the inside of the full-piece carpet. The full-piece carpet is a straight-hair carpet herein.

[0293] It is to be understood that, for a full-piece carpet with planted bristles of a pile length being equal to 4.5 mm, because the carpet usually has a backing (for example, 1 mm thick) configured to arrange pile, a thickness of the full-piece carpet with a pile length of 4.5 mm is greater than 5 mm. However, the pile length is not greater than 5 mm. Therefore, a carpet with a total thickness that meets the foregoing requirement and a pile length that does not meet the foregoing requirement does not fall within the scope of the foregoing carpets that meet conditions.

[0294] In a case that the cleaning robot is located on a full-piece carpet, distances of the free end of the first blocking member and the free end of the second blocking member from a to-be-cleaned surface are further reduced, or even the free end of the first blocking member and the free end of the second blocking member can be in contact with a surface of the full-piece carpet, so that the first air flow and the second air flow centrally flow through an inside of the full-piece carpet in some embodiments. That is, compared with an existing cleaning robot, in a case that the cleaning robot is located on a full-piece carpet, an air flow flowing through an inside of the full-piece carpet is increased.

[0295] In addition, the roller brush assembly “sinks in” the full-piece carpet, so that a lowest point at the bottom of the first roller brush and a lowest point at the bottom of the second roller brush are located inside the full-piece carpet. The first roller brush and the second roller brush can beat the inside of the full-piece carpet, to agitate garbage in clearances in the carpet pile. The first air flow carries away garbage agitated by the first roller brush in some embodiments, and the second air flow carries away garbage agitated by the second roller brush in some embodiments, so that a cleaning effect of the full-piece carpet is greatly improved.

[0296] In some examples, the cleaning robot includes a dust suction fan, configured to generate a negative pressure.

[0297] In a case that the cleaning robot is located on a carpet and the free end of the first blocking member and the free end of the second blocking member are in contact with the carpet, a flow rate of an air flow flowing through the inside of the carpet accounts for 70% or above of a flow rate of that flowing out from a dust inlet.

[0298] The flow rate of the air flow flowing out from the dust inlet is measured at the dust inlet or measured on a suction side (in communication with the dust inlet) of the dust suction fan in some embodiments.

[0299] In some examples, the flow rate of the air flow flowing through the inside of the carpet is measured at the dust inlet after a channel between a blocking member and a roller brush or even a space in a brush head of a roller brush is sealed in some embodiments.

[0300] It is to be noted that, the negative pressure is configured to generate an air flow configured to suck garbage on the environmental surface in some embodiments.

[0301] The sealing performance is improved. Especially, in a case that the cleaning robot is located on a carpet and the free end of the first blocking member and the free end of the second blocking member are in contact with the carpet, that is, distances between the first blocking member and the second blocking member and a surface of a standard test carpet are basically equal to 0 or even less than 0, where the distances being less than 0 indicates that a blocking member enters the standard test carpet, the air flow formed by the negative pressure of the dust suction fan centrally flows through an inside of the carpet. A level on which the air flow centrally flows through the carpet is represented by a ratio in some embodiments. For example, a flow rate of an air flow flowing through an inside of the standard test carpet accounts for more than 70% of a flow rate of an air flow on the suction side of the dust suction fan.

[0302] For another flexible ground, for a carpet with a hardness greater than a set value (for example, a hardness close to that of a floor) or a carpet with a pile length far less than a length, for example, a carpet of 2 mm, an air flow fails to flow through an inside of the carpet in some embodiments. Therefore, in a case that the cleaning robot is located on this type of flexible ground, the first air flow and the second air flow centrally flow through a surface of this type of flexible ground in some other embodiments, so that a cleaning effect of this type of flexible ground can be improved.

[0303] In some examples, the first distance is less than a length of a connecting line 1C formed between a lowest position point of the first roller brush and a lowest position point of the second roller brush.

[0304] The second distance is less than the length of the connecting line formed between the lowest position point of the first roller brush and the lowest position point of the second roller brush.

[0305] A distance between a blocking member and the environmental surface is small. An opening formed by the small distance has a first resistance on an air flow, and has a second resistance on an air flow inside a carpet with a pile length (for example, a straight-hair carpet with a pile length ranging from 3 mm to 5 mm). The first resistance is equal to the second resistance. For example, a ratio of the second resistance to the first resistance ranges from 0.8 to 1.2. In this case, when the cleaning robot is located on a flexible ground, especially on a carpet with a pile length, an air flow centrally flows through an inside of the carpet in some embodiments. A distance between lowest position points of outer contours of the first roller brush and the second roller brush is large. An opening formed by the large distance has a third resistance on the air flow. The third resistance is equal to the second resistance. For example, the third resistance is less than or equal to the second resistance, so that when the cleaning robot is located on a flexible ground, especially on a carpet with a pile length, the air flow flows out from a space between the first roller brush and the second roller brush in some embodiments.

[0306] To make an air flow better cooperate with a beating action of a roller brush, the air flow is guided to a required place (for example, the air flow is guided to a bottom / beating region of the roller brush), and the air flow is kept from flowing away from a non-required place (for example, the air flow does not flow through the bottom / beating region of the roller brush, but instead flows through a side clearance / space / channel formed at a blocking member and an outer contour of a roller brush), to improve the utilization of the air flow. In some examples, the free end of the blocking member extends close to the bottom of the roller brush or the beating region formed by the roller brush in some embodiments; or, when the roller brush is in contact with the environmental surface, the blocking member extends to a position that is of the roller brush and is close to a contact between the roller brush and the environmental surface.

[0307] Therefore, in some examples, a distance between the free end of the blocking member and the lowest position point of the adjacent roller brush is used to represent a level by which the blocking member extends.

[0308] For example, a minimum distance between the free end 110A of the first blocking member and a lowest position point 2201A of the first roller brush is a third distance M1, the third distance is less than 20 mm, and the first air flow is guided to the bottom of the first roller brush.

[0309] A minimum distance between the free end 112A of the second blocking member and a lowest position point 2202A of the second roller brush is a fourth distance M2, the fourth distance is less than 20 mm, and the second air flow is guided to the bottom of the second roller brush.

[0310] In some examples, a minimum distance between the free end 110A of the first blocking member and a lowest position point 2201A of the first roller brush is a third distance M1, the third distance is less than 15 mm, and the first air flow is guided to the bottom of the first roller brush.

[0311] A minimum distance between the free end 112A of the second blocking member and a lowest position point 2202A of the second roller brush is a fourth distance M2, the fourth distance is less than 15 mm, and the second air flow is guided to the bottom of the second roller brush.

[0312] Further, a minimum distance between the free end of the first blocking member and a lowest position point of the first roller brush is a third distance, the third distance is less than 12 mm, and the first air flow is guided to the bottom of the first roller brush.

[0313] A minimum distance between the free end of the second blocking member and a lowest position point of the second roller brush is a fourth distance, the fourth distance is less than 12 mm, and the second air flow is guided to the bottom of the second roller brush.

[0314] For ease of understanding, in a case that a center distance between the two roller brushes in the front and rear is 35.5 mm (a radius of the roller brush is approximately 17.25 mm) and a reserved spacing between the two roller brushes is 1 mm (to avoid mutual interference between the two roller brushes), when a lowest end of a front blocking member is 2 mm from the ground, a distance between the lowest end and a lowest point of a front roller brush in contact with the ground is approximately 11.76 mm. When a lowest end of a rear blocking member is 1 mm from the ground, a distance between the lowest end and a lowest point of a rear roller brush in contact with the ground is approximately 10.1 mm.

[0315] The first blocking member extends close to the lowest position point of the first roller brush, and guides the first air flow to the bottom of the first roller brush, to enable the first air flow to better cooperate with beating of the first roller brush. Further, the second blocking member extends close to the lowest position point of the second roller brush, and guides the second air flow to the bottom of the second roller brush, to enable the second air flow to better cooperate with beating of the second roller brush, thereby improving a cleaning effect of the environmental surface.

[0316] In some examples, the third distance M1 exists between the free end 110A of the first blocking member and the lowest position point 2201A of the first roller brush, the third distance is less than 15 mm, and the first air flow is guided to the first beating region of the first roller brush.

[0317] The fourth distance M2 exists between the free end 112A of the second blocking member and the lowest position point 2202A of the second roller brush, the fourth distance is less than 15 mm, and the second air flow is guided to the second beating region of the second roller brush.

[0318] Further, the third distance exists between the free end of the first blocking member and the lowest position point of the first roller brush, the third distance is less than 12 mm, and the first air flow is guided to the first beating region of the first roller brush.

[0319] The fourth distance exists between the free end of the second blocking member and the lowest position point of the second roller brush, the fourth distance is less than 12 mm, and the second air flow is guided to the second beating region of the second roller brush. Similarly, a blocking member is disposed at a position close to a beating region of a roller brush and guides an air flow to the beating region, to enable an air flow that can carry garbage to cooperate with a beating action of the roller brush more directly, which helps to improve the cleaning efficiency of the environmental surface.

[0320] It is to be noted that, a blocking member is close to a lowest position point of a roller brush, so that in a case that the cleaning robot is located on a flexible ground, especially on a carpet with a pile length, an air flow can flow through an inside of the carpet, thereby greatly improving a cleaning effect of the carpet.

[0321] The foregoing lowest position point of the roller brush is a lowest position point at an outer contour of the roller brush when the cleaning robot is located on the environmental surface.

[0322] In some examples, a length of a connecting line between the free end of the first blocking member and a lowest position point of the first roller brush is less than a distance between the lowest position point of the first roller brush and a lowest position point of the second roller brush.

[0323] When the distance between the free end of the first blocking member and the lowest position point of the first roller brush is small, in one aspect, the first air flow is guided to a required place in some embodiments, and in another aspect, a resistance of an opening formed by the distance between the free end of the first blocking member and the lowest position point of the first roller brush on an air flow is equal to a resistance of channels inside a carpet (for example, a pile carpet with a pile length ranging from 3 mm to 4 mm) with a pile length on an air flow, to enable the first air flow to flow through the inside of the carpet. That is, when the distance between the free end of the first blocking member and the lowest position point of the first roller brush is made small, in a case that the cleaning robot is located on a flexible ground, especially on a carpet with a pile length, the first air flow can be better guided to the bottom of the first roller brush or the first beating region, and the first air flow also flows through the inside of the carpet more easily. When the distance between the lowest position point of the first roller brush and the lowest position point of the second roller brush is large, a resistance of an opening formed by the lowest position point of the first roller brush and the lowest position point of the second roller brush on an air flow is less than or equal to a resistance of the carpet on an air flow, to enable an air flow flowing through the inside of the carpet to flow out from the space between the first roller brush and the second roller brush and flow to a dust box of the cleaning robot.

[0324] In some examples, a length of a connecting line between the free end of the second blocking member and a lowest position point of the second roller brush is less than a distance between the lowest position point of the first roller brush and a lowest position point of the second roller brush.

[0325] Similarly, the distance between the second blocking member and the lowest position point of the second roller brush is small, and the distance between the lowest position point of the first roller brush and the lowest position point of the second roller brush is large, so that in a case that the cleaning robot is located on a flexible ground, especially on a carpet with a pile length, the second air flow can be guided to the bottom of the second roller brush or the second beating region more smoothly, and the second air flow flows through an inside of the carpet more easily, flows out from the space between the first roller brush and the second roller brush, and eventually flows into the dust box of the cleaning robot.

[0326] In some examples, a horizontal distance between the free end of the blocking member and an outer contour of the adjacent roller brush (for example, a distance between the free end of the blocking member and a point that is on the outer contour of the roller brush, is located on the same horizontal plane as the free end, and is closest to the free end) is used to represent a level on which the blocking member extends in some embodiments.

[0327] In consideration of a manner in which the blocking member extends, in some examples, the first blocking member has at least a middle point different from the free end of the first blocking member, a distance between the middle point and a lowest position of the first roller brush is greater than the third distance, and a connecting line between a projection of the middle point onto a horizontal plane and the free end points to the lowest position of the first roller brush.

[0328] The blocking member is disposed as a blocking member that extends non-vertically, so that in a case that the cleaning robot encounters an obstacle and needs to surmount the obstacle, the blocking member further lifts the roller brush to assist in obstacle surmounting to some extent in some embodiments.

[0329] In some examples, the first blocking member has a non-free end portion. The non-free end portion is another part of the blocking member with a ground distance being greater than that of the free end.

[0330] A horizontal distance (corresponding to a first horizontal distance below) between the free end of the first blocking member and the first roller brush is less than or equal to a horizontal distance between the non-free end portion of the first blocking member and the first roller brush.

[0331] A horizontal distance (corresponding to a second horizontal distance below) between the free end of the second blocking member and the second roller brush is less than or equal to a horizontal distance between a non-free end portion of the second blocking member and the second roller brush.

[0332] In some examples, the first blocking member is arc-shaped, and extends toward the first roller brush; and the second blocking member is arc-shaped, and extends toward the second roller brush.

[0333] The blocking member is disposed to be arc-shaped, and the blocking member and the roller brush are better joined in shape, to enable the blocking member to be smoothly transitioned and extend to the roller brush. In one aspect, an air flow is guided more smoothly, and in another aspect, the arrangement better adapts to an obstacle surmounting scenario. The first blocking member smoothly extends to the first roller brush, and the second blocking member smoothly extends to the second roller brush.

[0334] Certainly, in some examples, the first blocking member and the second blocking member are disposed to be non-arc-shaped, for example, in a step form in some other embodiments.

[0335] In some examples, a first opening portion formed by the free end of the first blocking member and the rigid ground has a first area, and a second opening portion formed by the free end of the second blocking member and the rigid ground has a second area. A value range of a width (the first distance) of the first area is 0 mm to 5 mm, and a value range of a length (a length by which the roller brush is covered) is 170 mm to 210 mm. A value range of a width (the second distance) of the second area is 0 mm to 5 mm, and a value range of a length (a length by which the roller brush is covered) is 165 mm to 220 mm. Alternatively, a difference value between the first area and the second area ranges from 0 to 220*5 mm2.

[0336] In some examples, at least one of the first blocking member and the second blocking member is movable, and the movement stroke of the movable blocking member is greater than or equal to 5 mm.

[0337] In some examples, a ratio of the length of the first blocking member to the length of the first roller brush is greater than or equal to 70%. A ratio of the length of the second blocking member to the length of the second roller brush is greater than or equal to 70%.

[0338] To reduce flowing of a gas from a non-required place, for example, reduce flowing of an air flow from a channel between the first blocking member and the first roller brush, in some examples, the horizontal distance between the free end of the blocking member and the outer contour of the adjacent roller brush is used to represent a size of an opening between the blocking member and the adjacent roller brush in some embodiments.

[0339] For example, a first horizontal distance N1 exists between the free end of the first blocking member and the outer contour of the first roller brush, and the first horizontal distance is less than or equal to 5 mm.

[0340] To reduce flowing of an air flow from a channel between the second blocking member and the second roller brush, in some examples, a second horizontal distance N2 exists between the free end of the second blocking member and the second roller brush, and the second horizontal distance is less than or equal to 5 mm.

[0341] Further, the first horizontal distance exists between the free end of the first blocking member and the outer contour of the first roller brush, and the first horizontal distance is less than or equal to 4 mm; and the second horizontal distance exists between the free end of the second blocking member and the second roller brush, and the second horizontal distance is less than or equal to 4 mm. Furthermore, the first horizontal distance is less than or equal to 3 mm; and the second horizontal distance exists between the free end of the second blocking member and the second roller brush, and the second horizontal distance is less than or equal to 3 mm.

[0342] It is to be noted that, to avoid wear, the free end of the blocking member cannot contact the outer contour of the adjacent roller brush. Therefore, in some examples, the foregoing first horizontal distance and second horizontal distance are greater than 0.

[0343] In some examples, the minimum distance between the free end of the blocking member and the outer contour of the adjacent roller brush is used to represent a size of an opening between the blocking member and the adjacent roller brush in some embodiments. The minimum distance is a minimum value obtained by subtracting a distance of the radius of the roller brush from a distance between a point on the free end and the center of the roller brush.

[0344] For example, a minimum distance between the free end of the first blocking member and the outer contour of the first roller brush is a fifth distance Y1, and the fifth distance is less than or equal to 8 mm; and a minimum distance between the free end of the second blocking member and an outer contour of the second roller brush is a sixth distance Y2, and the sixth distance is less than or equal to 8 mm.

[0345] In some examples, a minimum distance between the free end of the first blocking member and the outer contour of the first roller brush is a fifth distance Y1, and the fifth distance is less than or equal to 4 mm; and a minimum distance between the free end of the second blocking member and an outer contour of the second roller brush is a sixth distance Y2, and the sixth distance is less than or equal to 4 mm.

[0346] Further, the minimum distance between the free end of the first blocking member and the outer contour of the first roller brush is less than or equal to 3 mm; and the minimum distance between the free end of the second blocking member and the outer contour of the second roller brush is less than or equal to 3 mm. Furthermore, the minimum distance between the free end of the first blocking member and the outer contour of the first roller brush is less than or equal to 2 mm; and the minimum distance between the free end of the second blocking member and the outer contour of the second roller brush is less than or equal to 2 mm.

[0347] It is to be noted that, to avoid wear, the free end of the blocking member cannot contact the outer contour of the adjacent roller brush. Therefore, in some examples, the foregoing minimum distance between the free end of the first blocking member and the outer contour of the first roller brush and the foregoing minimum distance between the free end of the second blocking member and the outer contour of the second roller brush are greater than 0.

[0348] The openings in the two sides are made small, to reduce air flows that enter through the openings in the two sides, so that more air flows can flow through the bottom / the beating region of the roller brush. Moreover, interference between the roller brush and the blocking member is avoided, to prevent wear from affecting the service life of parts.

[0349] Specifically, for example, a horizontal distance is used to represent a size of an opening. The free end of the first blocking member and the first horizontal distance of the first roller brush are made small, to reduce entry of the first air flow through the opening in the first horizontal distance, so that more air flows flow to the bottom of the first roller brush or the first beating region.

[0350] The second horizontal distance between the free end of the second blocking member and the outer contour of the second roller brush is made small, to reduce entry of the second air flow through an opening formed by the second horizontal distance, so that more air flows flow through the bottom of the second roller brush or the second beating region.

[0351] In some examples, when the first roller brush and the second roller brush rotate toward each other in opposite directions, the first air flow flows from the outside of the cavity, below the first blocking member, through the bottom of the first roller brush, and toward the space between the first roller brush and the second roller brush, and the second air flow flows from the outside of the cavity, below the second blocking member, through the bottom of the second roller brush, and toward the space between the first roller brush and the second roller brush.

[0352] The double roller brushes perform beating in opposite directions. In one aspect, the beating in two opposite and facing directions can improve agitation of garbage in gaps of a hard ground, in carpet pile, or deep in a carpet, which helps to improve the dust agitation effect. In another aspect, when the double roller brushes rotate, an air flow is stirred, and better stirring is implemented compared with a single roller brush. The reason is that for a single roller brush, an air flow on one side is definitely promoted, and an air flow on the other side fails to effectively used (the air flow fails to flow through the bottom of the roller brush, and instead directly flows through a channel between the roller brush support and a contour of the roller brush and is lost). The double roller brushes rotate toward each other in two opposite directions, which helps to promote flowing of air flows on both sides of the roller brush assembly. For example, after the first air flow cooperates with the first roller brush (the bottom or the beating region) and the second air flow cooperates with the second roller brush (the bottom or the beating region), the first air flow and the second air flow are both promoted to flow through a space between the double roller brushes centrally. In other words, when the first roller brush and the second roller brush rotate toward each other in opposite directions, the first air flow flows from the outside of the cavity, below the first blocking member, through the bottom of the first roller brush, and toward the space between the first roller brush and the second roller brush, and the second air flow flows from the outside of the cavity, below the second blocking member, through the bottom of the second roller brush, and toward the space between the first roller brush and the second roller brush.

[0353] In some examples, the cavity has a dust inlet 14 connected to the dust suction fan.

[0354] The first roller brush rotates in a first direction, the second roller brush rotates in a second direction, and the second direction and the first direction are opposite and face each other. For example, the first direction is a counterclockwise direction, and the second direction is a clockwise direction.

[0355] A first horizontal distance exists between the free end of the first blocking member and the first roller brush to form a first inlet for an air flow to enter, and the first direction hinders an air flow flowing through the first inlet along a space 14A between an outer contour of the first roller brush and the first blocking member toward the dust inlet of the cavity.

[0356] A second horizontal distance exists between the free end of the second blocking member and the second roller brush to form a second opening for an air flow to enter, and the second direction hinders an air flow flowing through the second opening along a space 14B between an outer contour of the second roller brush and the first blocking member toward the dust inlet.

[0357] Compared with the single roller brush, the double roller brushes have a better stirring effect on air when rotating in opposite directions. In addition to promoting an air flow to flow through a required place (for example, promoting air flows on two side to respectively flow through the bottoms / beating regions of the first roller brush and the second roller brush and then centrally flow to a space between the double roller brushes), rotational directions of the double roller brushes further hinder an air flow from flowing through a non-required place in some embodiments, for example, hinder air flows flowing on two sides through the channel between the blocking member and the roller brush (for example, an air flow flowing through the first inlet, along a space between the outer contour of the first roller brush and the first blocking member, and toward the dust inlet of the cavity and an air flow flowing through the second opening, along a space between the outer contour of the second roller brush and the first blocking member, and toward the dust inlet of the cavity).

[0358] In some examples, the double roller brushes share one roller brush motor for driving, and a power of the roller brush motor ranges from 20 W to 40 W.

[0359] In the cleaning robot, the power (for example, 25 W to 35 W) of the roller brush motor of the double roller brushes is greater than a power (10 W to 20 W) of the roller brush motor of the single roller brush, so that a quantity of beats within a unit time is increased, thereby improving the dust agitation effect.

[0360] To reduce a possible adverse impact of a suction force of an air flow on a blocking member, for example, a deformation of the blocking member, which affect the sealing performance, therefore, in some examples, a hardness of a material of at least one of the first blocking member and the second blocking member is greater than or equal to 80 HA.

[0361] In some examples, a hardness of the material of the first blocking member is greater than or equal to 80 HA. Further, the hardness of the material of the second blocking member is greater than or equal to 80 HA.

[0362] The hardnesses of the materials of the first blocking member and the second blocking member are both greater than or equal to 80 HA, so that the blocking members can match a suction force after sealing, and is not prone to deformations.

[0363] In consideration of that there are some large-size garbage 01 (for example, large particles, and clumps of hair) with large sizes (for example, sizes greater than the first distance and less than a threshold, for distinguishing from an obstacle) on the environmental surface, to further deal with cleaning of garbage such as large particles and clumps of hair (for example, with sizes ranging from 5 mm to 20 mm), at least one of the first blocking member and the second blocking member is disposed to be movable.

[0364] It is to be noted that, in a case that the first blocking member or the second blocking member is movable, the foregoing sealing level and an effect thereof are reached in a case that the first blocking member or the second blocking member is in the near-ground mode. For example, the first blocking member is movable and has an open state and a closed state, and the foregoing sealing level can only be reached in the near-ground mode in which the first blocking member is in the closed state. For example, when the first roller brush and the second roller brush rotate toward each other in opposite directions, the first air flow flows from the outside of the cavity, under the first blocking member, through the bottom of the first roller brush, and toward the space between the first roller brush and the second roller brush, and the second air flow flows from the outside of the cavity, under the second blocking member, through the bottom of the second roller brush, and toward the space between the first roller brush and the second roller brush. Alternatively, when the first roller brush beats the environmental surface to form the first beating region and the second roller brush beats the environmental surface to form the second beating region, the first air flow flows from the outside of the cavity, through the first beating region, and toward the dust inlet of the cavity, and the second air flow flows from the outside of the cavity, through the second beating region, and toward the dust inlet. In an example, in a scenario in which the cleaning robot is located on a carpet with a thickness value greater than a thickness, the free end of the second blocking member is in contact with the carpet, and when the first blocking member is in the closed state, the free end of the first blocking member is in contact with the carpet (reaching a corresponding sealing level), to enable the first air flow to flow from the outside of the cavity, through the inside of the carpet, and toward the dust inlet of the cavity and the second air flow to flow from the outside of the cavity, through the inside of the carpet, and toward the dust inlet. The ratio of the first air flow to the second air flow is greater than or equal to 0.7 and is less than or equal to 1.3.

[0365] It is to be understood that, when the second blocking member is movable, the sealing effect described above can also be reached in a case that the second blocking member is in the near-ground mode. Details are not excessively described herein.

[0366] Because the cleaning robot usually travels toward the front (the front end of the body is the front), in some examples, the first blocking member is movable to adjust a distance between the free end of the first blocking member and a rigid ground, providing the first blocking member with a closed state and an open state.

[0367] When the first blocking member is in the closed state, the first distance exists between the free end of the first blocking member and the rigid ground. In consideration of factors such as the shape of the blocking member, the first distance is the minimum distance of the foregoing first blocking member in the near-ground mode.

[0368] When the first blocking member is in the open state, the second distance exists between the distance between the free end of the first blocking member and the rigid ground. The second distance is greater than the first distance. It is to be noted that, in consideration of factors such as the shape of the blocking member, the second distance is the minimum distance of the first blocking member in a non-near-ground mode (for example, a far-away-from-ground mode).

[0369] The first blocking member is disposed to be movable, so that the first blocking member has the open state and the closed state. When the first blocking member is in the closed state, the cleaning robot can perform cleaning with a high cleaning efficiency. When the first blocking member is in the open state, the cleaning robot can suck large particles and clumps of hair (also referred to as hair clumps) in front.

[0370] That is, in a case that the cleaning robot recognizes clumps of hair, the blocking member is in the open state. For example, the first blocking member is movable, and in a case that the cleaning robot recognizes clumps of hair, the first blocking member is opened, to clean up clumps of hair.

[0371] In some examples, the second blocking member is also movable to adjust a distance between the free end of the second blocking member and a rigid ground, providing the second blocking member with a closed state and an open state.

[0372] The second blocking member has the closed state and the open state;

[0373] When the second blocking member is in the closed state, the second distance exists between the free end of the second blocking member and the rigid ground. When the second blocking member is in the open state, the distance between the free end of the second blocking member and the rigid ground is greater than the second distance.

[0374] Similarly, when the second blocking member is movable and large particles or clumps of hair near the second blocking member need to be cleaned up, the second blocking member is opened.

[0375] It is to be noted that, because the second blocking member is disposed at a rear end of the body, usually, the second blocking member is in the closed state, to improve a sealing effect of the cavity.

[0376] In some examples, the dust suction assembly includes a housing, and the housing includes a first roller brush support portion at least partially covering the first roller brush.

[0377] In some examples, the housing further includes a second roller brush support portion at least partially covering the second roller brush.

[0378] In some examples, the housing includes the first roller brush support portion at least partially covering the first roller brush and the second blocking member at least partially covering the second roller brush. The first roller brush support portion extends from a dust suction port, along the outer contour of the first roller brush, and toward an end away from the environmental surface. The second blocking member extends from the dust suction port, along the outer contour of the second roller brush, and toward the end away from the environmental surface. At least one of the first roller brush support portion and the second blocking member has a non-arc shape, and distances between the first roller brush support portion and a roller brush support portion with a non-arc shape design in the second blocking member and the outer contour of the roller brush vary between 1 mm and 4 mm.

[0379] It is to be noted that, the dust suction assembly has the housing, and the first blocking member and the second blocking member are parts of the housing in some embodiments, or are parts that are independent of the housing and are additionally disposed in some embodiments.

[0380] In some examples, the dust inlet 14 is opened in an upper portion of the housing.

[0381] For example, referring to FIG. 100 and FIG. 101, the housing includes a first roller brush support portion 230A and a second roller brush support portion 230B. The first blocking member 110 is disposed independently of the housing, for example, is disposed on the first roller brush support portion 230A in some embodiments, or is disposed on the body of the cleaning robot in some embodiments. The second blocking member 112 is a part (for example, a part that is located at a lower end of the second roller brush support portion and produces a sealing effect) of the second roller brush support portion 230B. In this case, the first blocking member, the first roller brush support portion, and the second roller brush support portion surround to form the cavity.

[0382] In an example, referring to FIG. 102, the housing includes a first roller brush support portion 230A and a second roller brush support portion 230B. The second blocking member 112 is disposed independently of the housing, for example, is disposed on the second roller brush support portion 230B in some embodiments, or is disposed on the body of the cleaning robot in some embodiments. The first blocking member 110 is a part (for example, a part that is located at a lower end of the first roller brush support portion and produces a sealing effect) of the first roller brush support portion 230A. In this case, the first blocking member, the first roller brush support portion, and the second roller brush support portion surround to form the cavity.

[0383] In an example, referring to FIG. 103, the housing includes a first roller brush support portion 230A and a second roller brush support portion 230B. The first blocking member 110 is a part (for example, a part that is located at a lower end of the first roller brush support portion and produces a sealing effect) of the first roller brush support portion 230A. The second blocking member 112 is a part (for example, a part that is located at a lower end of the second roller brush support portion and produces a sealing effect) of the second roller brush support portion 230B. In this case, the first roller brush support portion and the second roller brush support portion surround to form the cavity.

[0384] In an example, referring to FIG. 104, the housing includes a first roller brush support portion 230A and a second roller brush support portion 230B. The first blocking member 110 is disposed independently of the housing, for example, is disposed on the first roller brush support portion 230A in some embodiments, or is disposed on the body of the cleaning robot in some embodiments. The second blocking member 112 is disposed independently of the housing, for example, is disposed on the second roller brush support portion 230B in some embodiments, or is disposed on the body of the cleaning robot in some embodiments. In this case, the first blocking member, the first roller brush support portion, the second roller brush support portion, and the second blocking member surround to form the cavity.

[0385] In some examples, the housing further includes a roller brush cover in some embodiments. As shown in FIG. 66, the roller brush support and the roller brush cover are detachably connected in some embodiments, to facilitate a maintenance of the roller brush assembly.

[0386] In some examples, the housing includes an upper housing (also referred to as an upper support) and a lower housing (also referred to as a roller brush cover or a lower support). The upper housing and the lower housing jointly form the roller brush support, that is, the roller brush support includes a roller brush cover, configured to cover the roller brush assembly in some embodiments. Further, the roller brush support includes a first roller brush support portion configured to at least partially cover the first roller brush and a second roller brush support portion configured to at least partially the second roller brush. The first roller brush support portion includes front half parts of the upper housing and the lower housing, and the second roller brush support portion includes rear half parts of the upper housing and the lower housing.

[0387] In some examples, the dust inlet 14 in communication with the dust suction fan is formed in the upper housing in some embodiments.

[0388] In some examples, the first blocking member is movably disposed on the first roller brush support portion, to block the first roller brush.

[0389] The first blocking member is disposed independently of the housing, so that while it is convenient to control the first blocking member to ensure both cleaning of large particles and sealing performance of the cavity, an impact of opening and closing of the first blocking member on the entire structure of the housing is reduced.

[0390] It is to be noted that, the first blocking member is disposed on an outer side of the first roller brush support portion in some embodiments, or is disposed on an inner side of the first roller brush support portion in some embodiments (that is, the first blocking member is disposed between the first roller brush and the first roller brush support portion in some embodiments).

[0391] To ensure sealing, prevent a mutual interference problem of parts, and fully use an internal space of a device, a clearance between the first roller brush support portion and the outer contour of the first roller brush is usually very small. Therefore, in some examples, the first blocking member is disposed on the outer side of the first roller brush support portion in some embodiments.

[0392] The first blocking member (for example, a baffle or a door, or the like) is disposed on the outer side of the first roller brush support portion, so that it is convenient to arrange a traction mechanism for driving the first blocking member to move, no interference is generated with the first roller brush support portion and the first roller brush, and the extension of a lower portion of the first blocking member is facilitated, making it easier for the lower portion to approach the lowest position of the first roller brush, which helps to ensure the sealing effect.

[0393] In consideration of that the second blocking member is located at the rear end of the body and is usually located at a fixed position of a closed state, to improve the sealing effect of the entire cavity, it is scarcely necessary to frequently open the second blocking member for large particles. In addition, software and hardware costs of the controller of the entire cleaning robot are reduced, and operations are simplified.

[0394] In some examples, the second blocking member (for example, a baffle or a door, or the like) is a part of the second roller brush support portion, to block the second roller brush. The first roller brush support portion and the second roller brush support portion surround to form the cavity configured to accommodate the roller brush assembly.

[0395] The second blocking member is disposed as a part of the housing, so that while the sealing performance of the cavity is improved, control logic is simplified, which helps to reduce the costs of the device.

[0396] In some examples, when the first blocking member is in the open state, a difference value between the first air flow and the second air flow is Δ1; and when the first blocking member is in the closed state, and the difference value between the first air flow and the second air flow is Δ2, where Δ2 is less than Δ1.

[0397] In a case that the second blocking member remains in a closed state, for example, is used as a part of the housing and keeps sealing the rear portion of the cavity, before and after the first blocking member is closed, the difference value between the first air flow and the second air flow decreases.

[0398] It is to be understood that, regardless of whether the environmental surface is a rigid ground or a flexible ground, the first blocking member can improve sealing in the closed state, to achieve the foregoing effect brought by the improvement of the sealing performance. In addition, a cleaning efficiency when the cleaning robot is located on a soft ground and the blocking member is in the closed state is higher than a cleaning efficiency when the cleaning robot is located on a hard ground and the blocking member is in the closed state.

[0399] Before the first blocking member is closed, the first blocking member has a large ground distance in the open state and has a small resistance. The second blocking member is in the closed state, that is, the second blocking member has a small ground distance in the closed state and has a large resistance. An air flow tends to flow through a place with a small resistance. Therefore, an air flow formed by a negative pressure is more likely to enter the cavity through the first blocking member (the front side of the body) and is kept from entering the cavity through the second blocking member (the rear side of the body). Therefore, the first air flow is large, and centrally enters through the front side of the body, and the second air flow is small, and is nearly 0. In addition, the first air flow that enters through a large opening formed between the first blocking member and the environmental surface cannot effectively reach the first roller brush. Therefore, the first air flow cannot effectively cooperate with the bottom or the beating region of the first roller brush. After the first blocking member is closed, the ground distance of the first blocking member decreases, and the resistance is increased. The first blocking member and the second blocking member have close ground distances and have basically consistent resistances. The air flow generated by the negative pressure (including the first air flow and the second air flow) centrally enters from the front and rear sides of the body in some embodiments, so that the first air flow reaches the bottom or the beating region of the first roller brush through the first blocking member, and the second air flow reaches the bottom or the beating region of the second roller brush through the second blocking member, thereby greatly improving the cleaning efficiency.

[0400] In some examples, when the first blocking member is in the closed state, an air flow at a beating region in which the first roller brush beats the environmental surface has a first flow speed; and when the first blocking member is in the open state, the air flow at the beating region has a second flow speed, where the first flow speed is greater than the second flow speed.

[0401] That is, in a case that the second blocking member remains in the closed state or the second blocking member has a distance less than or equal to 5 mm from the hard ground or on a carpet, the free end of the second blocking member is in contact with the carpet, before and after the first blocking member is closed, a flow speed of an air flow at a beating region is increased, to better carry away garbage agitated by, thereby improving the cleaning effect.

[0402] In some examples, in a case that the cleaning robot is located on a carpet and the free ends of the first blocking member and the second blocking member are in contact, when the first blocking member is in the closed state, an air flow at a first beating region in which the first roller brush beats the environmental surface has a first flow speed; and when the first blocking member is in the open state, the air flow at the first beating region has a second flow speed, where the first flow speed is greater than the second flow speed.

[0403] In some examples, in a case that the cleaning robot is located on a carpet and the free end of the second blocking member is in contact with the carpet, a flow rate of an air flow flowing through an inside of the carpet from the first blocking member when the first blocking member is in the closed state is greater than a flow rate of an air flow flowing through an inside of a standard carpet from the first blocking member when the first blocking member is in the open state.

[0404] In other words, in a case that the second blocking member remains in the closed state or the second blocking member has a distance less than or equal to 5 mm from the hard ground or on a carpet, the free end of the second blocking member is in contact with the carpet, before and after the first blocking member is closed, a flow rate of an air flow flowing through an inside of the carpet from the bottom of the first blocking member is increased, thereby improving a cleaning effect of a standard test carpet.

[0405] The reason lies in that, the distance between the free end of the first blocking member and the carpet when the first blocking member is in the closed state (for example, the distance is 0 when the first blocking member is in contact with the carpet) is less than that when the first blocking member is in the open state (for example, a small clearance exists and allows an air flow to flow through in some embodiments), a resistance at an opening in the closed state is greater than a resistance at an opening in the open state, and the air flow flows through the inside of the carpet more easily.

[0406] In some examples, in a case that the cleaning robot is located on a carpet and the free end of the second blocking member is in contact with the carpet, a flow rate of an air flow flowing through an inside of the carpet from the second blocking member when the first blocking member is in the closed state is greater than a flow rate of an air flow flowing through the inside of the carpet from the second blocking member when the first blocking member is in the open state.

[0407] That is, in a case that the second blocking member remains in the closed state before and after the first blocking member is closed, a flow rate of an air flow flowing through the inside of the carpet from the bottom of the second blocking member is also increased, thereby improving a cleaning effect of the carpet.

[0408] In some examples, a degree of vacuum at a position of the cavity when the first blocking member is in the closed state is greater than a degree of vacuum at the same position of the cavity when the first blocking member is in the open state.

[0409] In a case that the second blocking member remains in the closed state or the second blocking member has a distance less than or equal to 5 mm from the hard ground or on a carpet, the free end of the second blocking member is in contact with the carpet, before and after the first blocking member is closed, sealing performance at a same position of the cavity is improved.

[0410] A position of the cavity includes, but is not limited to, the dust inlet of the cavity, and the space between the first roller brush and the second roller brush.

[0411] Therefore, in some examples, when the first blocking member is in the closed state, a dust inlet of the cavity has a first degree of vacuum, and when the first blocking member is in the open state, the dust inlet of the cavity has a second degree of vacuum, where the first degree of vacuum is greater than the second degree of vacuum.

[0412] To implement that the blocking member is movable, in some examples, the dust suction assembly includes a traction unit, and the traction unit is disposed on the housing, to drive the first blocking member to switch between the open state and the closed state.

[0413] For details of the structure of the traction unit 120, refer to the following description about the traction unit. Details are not excessively described herein.

[0414] To implement resetting of the blocking member, in some examples, the dust suction assembly includes a reset unit in some embodiments.

[0415] It is to be understood that, in some examples, through the control of the traction unit, the function of resetting is also implemented the blocking member without additionally arranging the reset unit in some embodiments.

[0416] To adapt to obstacle surmounting, cleaning, sealing, and other requirements on an uneven environmental surface, in some examples, the dust suction assembly includes a housing, the housing includes a roller brush support configured to at least partially cover and support the roller brush assembly, and the roller brush support is configured to be vertically floatable relative to a horizontal plane or the body of the cleaning robot.

[0417] The roller brush assembly is disposed on the roller brush support, and the roller brush assembly floats as the roller brush support floats.

[0418] To better ensure the sealing effect, in some examples, the blocking member is also disposed to be floatable in some embodiments, to enable the blocking member to remain a relatively stable state with a corresponding roller brush.

[0419] For example, the first blocking member is configured to be floatable in a vertical direction.

[0420] The first blocking member floats vertically relative to the horizontal plane or the body of the cleaning robot in some other embodiments, to enable the first blocking member to remain a relatively stable state with the first roller brush, to ensure the sealing effect of the cavity.

[0421] In an example, the second blocking member is configured to be floatable in a vertical direction.

[0422] The second blocking member floats vertically relative to the horizontal plane or the body of the cleaning robot in some other embodiments, to enable the second blocking member to remain a relatively stable state with the second roller brush, to ensure the sealing effect of the cavity.

[0423] The second blocking member is usually used as a part of the roller brush support. Therefore, the roller brush support and the roller brush assembly are synchronously floatable. Therefore, the second blocking member and the second roller brush can always remain in a relatively stable state.

[0424] The first blocking member is usually disposed independently. Therefore, in some examples, the first blocking member is configured to synchronously float with the roller brush support, to keep a relatively stable state of the first blocking member and the first roller brush.

[0425] To achieve synchronous floating and at the same time ensure simplicity and easy feasibility without increasing costs, in some examples, the first blocking member is disposed on the roller brush support, to enable the first blocking member to float as the roller brush support floats like the roller brush assembly, thereby keeping a relatively stable state between the first blocking member and the first roller brush.

[0426] In consideration of that various parts such as a part (for example, a motor) for driving and a part (for example, a transmission mechanism) for transmission are disposed on the dust suction assembly, in some examples, the dust suction assembly includes a blocking member drive assembly configured to drive the first blocking member and a roller brush drive assembly configured to drive the roller brush assembly to rotate, and the blocking member drive assembly and the roller brush drive assembly are both disposed on the roller brush support, to enable both the blocking member drive assembly and the roller brush drive assembly to float as the roller brush support floats.

[0427] The blocking member drive assembly includes a blocking member drive motor and a first transmission part connected to the drive motor.

[0428] The roller brush drive assembly includes a roller brush drive motor and a second transmission part connected to the roller brush drive motor.

[0429] The foregoing first transmission part and second transmission part both use, for example, a gear rack transmission structure, a cam transmission structure or another mechanical transmission structure in some embodiments. This is not limited in the present disclosure.

[0430] Certainly, in consideration of whether a blocking member is switched in position, in some examples, an in-position detection apparatus is further disposed on the dust suction assembly in some embodiments, to implement in-position detection of the blocking member. For details, refer to the following description. Details are not excessively described herein.

[0431] It is to be noted that, the in-position detection apparatus is also disposed on the roller brush support in some embodiments, to enable the in-position detection apparatus to floats as the roller brush support floats.

[0432] For sealing and adaptation to various different scenarios, for example, obstacle surmounting, and cleaning on different environmental surfaces, in some examples, all parts of the dust suction assembly float together synchronously in some embodiments, and the structure is simple.

[0433] To facilitate a detachable maintenance of a roller brush, in some examples, the housing includes a roller brush cover.

[0434] In consideration of how to arrange a blocking member, especially a movable first blocking member, in some examples, the roller brush cover has a connecting portion connected to the roller brush support (which is to be understood as an upper support in a narrow sense herein). Two connecting portions are provided. In a direction parallel to a rotating axis, two connecting portions are arranged respectively disposed on two sides of the first blocking member.

[0435] The connecting portions of the roller brush cover and the roller brush support are disposed on the two sides of the first blocking member, to avoid an impact on the movement or floating of the first blocking member. Moreover, the first blocking member also does not affect the maintenance of the roller brush assembly.

[0436] It is to be noted that the movement is active, and is, for example, implemented through active control by a controller or through a manual operation on the traction unit; and the floating is passive, and only requires a space for floating.

[0437] To guide a movable blocking member and at the same time keep the blocking member from getting stuck by dust during movement, using the first blocking member being movable as an example, in some examples, a rib is disposed between the first blocking member and the first roller brush support portion, and the rib is configured to guide a blocking member to move along the first roller brush support portion. In some examples, a plurality of ribs are provided in some embodiments, and a space configured to accommodate dust is formed between adjacent ribs in some embodiments.

[0438] To prevent an air flow from flowing away through a clearance between the roller brush support portion and the blocking member, improve a sealing effect, and achieve a better cleaning efficiency, using the first blocking member being movable as an example, in some examples, in a length direction between the roller brush assembly, a sealing strip is disposed between the first blocking member and the first roller brush support portion. For the details of the above, refer to the following description about a dust accommodating space.

[0439] In consideration of a scenario in which a roller brush is lifted, a lifting drive structure needs to be disposed. To reduce costs, in some examples, the blocking member drive motor and a roller brush lifting mechanism share one motor. The first blocking member is used as an example. In some examples, the cleaning robot includes a lifting mechanism configured to drive the dust suction assembly to lift, the lifting mechanism includes a drive motor 1291, and the drive motor is further configured to drive the dust suction assembly to rise and fall in a vertical direction. For details, refer to the following.

[0440] To make the structure of the dust suction assembly more compact, in some examples, the first blocking member is rotatable to adjust a height of the free end of the first blocking member relative to the environmental surface, and a rotating axis of the first blocking member does not overlap with a rotating axis of at least one of the first roller brush and the second roller brush.

[0441] To avoid damage of a gear set in a collision scenario: In some examples, a fit between a motor output shaft and a gear is designed to be a loose fit (with a tolerance). For example, the dust suction assembly includes a drive system configured to drive the first blocking member to move and a transmission system configured to transfer a driving force of the drive system to the first blocking member; and the drive system includes a drive motor, the transmission system includes a gear set, and a clearance exists between an output shaft of the drive motor and the gear set. For details, refer to the following description about the loose fit.

[0442] To reduce a force on a blocking member in a collision scenario, in some examples, an anti-collision portion is disposed on a support for anti-collision in some embodiments. For example, to reduce a force on the first blocking member, in some examples, the dust suction assembly has an anti-collision portion, in a direction of the front end of the body, the anti-collision portion has at least a part located at a front portion of the first blocking member, and the part located at the front portion of the first blocking member has no connection relationship with the first blocking member, to contact an obstacle when the cleaning robot collides with the obstacle. Further, the dust suction assembly includes a housing, the housing has a first roller brush support portion at least partially covering the first roller brush, and the anti-collision portion includes a protrusion disposed on an outer side wall of the first roller brush support portion and protruding from the first blocking member.

[0443] To implement the intelligentization of the cleaning robot and implement intelligent sealing, real-time detection and intelligent control of the movable first blocking member is used as an example. In some examples, the cleaning robot includes a ground type detection apparatus, configured to detect a ground type.

[0444] The controller is configured to: when the detection apparatus detects that the ground type is a rigid ground, control the first blocking member to be opened; and when the detection apparatus detects that the ground type is a soft ground, control the first blocking member to be closed.

[0445] Further, the cleaning robot includes an environment detection apparatus, configured to detect a foreign object type.

[0446] When the cleaning robot performs cleaning work on the soft ground, the controller is at least configured to: when the environment detection apparatus recognizes that the foreign object type is garbage with a size meeting a preset condition, control the first blocking member to switch from the closed state to the open state.

[0447] To reduce hardware costs of real-time detection, using reduction of real-time detection and sealing of the movable first blocking member is used as an example, in some examples, the cleaning robot has a deep cleaning mode and a common cleaning mode, the cleaning robot has a first cleaning parameter in the deep cleaning mode, the cleaning robot has a second cleaning parameter in the common cleaning mode, the first cleaning parameter is different from the second cleaning parameter, and each cleaning parameter includes at least one of the following parameters: a state of the first blocking member, a movement speed, and a fan power.

[0448] In a case that the cleaning robot performs a cleaning operation on the soft ground, the controller controls the cleaning robot to switch between the two cleaning modes to alternately perform the cleaning operation.

[0449] Further, in the deep cleaning mode, the first blocking member is in the closed state; and in the common cleaning mode, the first blocking member is in the open state.

[0450] Further, the controller is configured to control the cleaning robot to perform the deep cleaning mode and the common cleaning mode alternately according to calendar days, and cleaning modes of the cleaning robot are different on two adjacent calendar days; or

[0451] the controller is configured to control the cleaning robot to perform the deep cleaning mode and the common cleaning mode alternately according to a quantity of times, traversal of the environmental surface completed by the cleaning robot is referred to as one time, and in adjacent two times, cleaning modes of the cleaning robot are different.

[0452] In a case that the cleaning robot performs the cleaning operation on the soft ground, the controller controls the cleaning robot to first clean the soft ground in the deep cleaning mode and then perform at least one round of along-the-edge cleaning on the soft ground, and during the first round of along-the-edge cleaning, the cleaning robot is in the common cleaning mode.

[0453] The deep cleaning mode and the following high-efficiency cleaning mode are both modes that can improve the cleaning efficiency of the cleaning robot, and are generally referred to as a first cleaning mode in some embodiments. The common cleaning mode and the following ordinary cleaning mode are both modes in which the cleaning robot keeps a relatively average cleaning efficiency, and are generally referred to as a second cleaning mode in some embodiments.

[0454] To implement obstacle surmounting assistance of a blocking member, especially the first blocking member located at the front end, in some examples, a guide surface is defined on an outer side wall of the first blocking member, and the guide surface is obliquely disposed facing the first roller brush and is disposed at an acute angle with respect to a horizontal plane; and the first blocking member is in the closed state, and the guide surface is at least partially closer to the environmental surface relative to a roller brush support.

[0455] It is to be understood that, when the first blocking member is movably disposed on the first roller brush support portion, to lift the roller brush assembly during the example of obstacle surmounting assistance of the first blocking member, a distance between a position of the free end of the first blocking member in the closed state and a cleaning surface is less than a distance between the lowest position of the first roller brush support portion and the cleaning surface.

[0456] Further, in a scenario of intelligent sealing, the cleaning robot includes an environment detection apparatus for detecting an obstacle in an environment; and in a case that the environment detection apparatus recognizes an obstacle with a size meeting a preset condition, the controller controls the first blocking member to be closed.

[0457] In some examples, the cleaning robot includes a fan, and a power of the fan is greater than or equal to 60 W.

[0458] Because the sealing effect is improved, a good cleaning efficiency can be achieved by using a fan with a power ranging from, for example, 60 W to 80 W in combination, and it is not necessary to use a high-power fan with a fan power at least greater than or equal to 100 W without improving the sealing performance to improve the cleaning effect, so that costs are reduced, a power supply capability requirement of a power supply apparatus is reduced, and machine miniaturization is facilitated.

[0459] It is to be noted that, all the foregoing technologies are applied to, for example, a handheld vacuum cleaner, especially a direct current (DC) handheld vacuum cleaner or another cleaning device in some embodiments. This is not described in excessive detail in the present disclosure.

[0460] The present disclosure further provides a cleaning system, including the foregoing cleaning robot and a base station for parking by the cleaning robot, where the base station is further configured to maintain the cleaning robot.

[0461] In some examples, the cleaning robot includes a dust collection box, and the base station includes a dust collection fan and is configured to perform a dust collection maintenance operation; and when the base station performs a dust collection maintenance on the dust collection box, at least one of the first blocking member and the second blocking member is in an open state.

[0462] To reduce frequent opening and closing of a blocking member in a maintenance process and improve the service life of the blocking member, in some examples, the base station includes an air intake channel, in communication with an outside and at least one clearance at a bottom of the cavity.

[0463] In consideration of that a filtering apparatus 114, for example, hepa, is usually disposed in the dust box, to implement the maintenance of the filtering apparatus, in some examples, a filtering apparatus is disposed in the dust collection box, and when the base station performs a dust collection maintenance on the filtering apparatus, the first blocking member and the second blocking member are in a closed state at least part time.

[0464] It is found through researches that, an existing structure for cooperating the roller brush assembly and the housing is restrictive, and in a cleaning process of the cleaning robot, the dust suction port cannot adjust, according to conditions of different cleaning surfaces, a suction efficiency of foreign objects by an air flow generated by a negative pressure. Specifically, in the cleaning process of the cleaning robot, a contact state between the dust suction port and the cleaning surface and a contact state between the roller brush and the cleaning surface restrict a flowing path of an air flow and a capability of carrying a foreign object by the air flow during cleaning by the cleaning robot. FIG. 2 is a schematic state diagram of the dust suction port in the housing, the roller brush, and the cleaning surface in processes of respectively cleaning two cleaning surfaces including a carpet and a floor by the cleaning robot, and flowing paths of air flows are labeled. It can be intuitively obtained from FIG. 2 that on a side of the robot in a traveling direction, an interval between the dust suction port and the cleaning surface is large, and the air flow generated by the negative pressure mostly flow into an air duct from a side of the dust suction port facing the traveling direction of the robot and adjacent lateral sides. In the structural arrangement such a dust suction port, because the front side of the robot in the traveling direction has poor sealing performance, a pressure difference of the negative pressure at the dust suction port is reduced, resulting in a poor dust suction capability of the dust suction system; especially, when the cleaning robot performs cleaning on a carpet or another soft ground, the cleaning efficiency is slightly low. As a solution, a suction power of the dust suction port can be improved by increasing a working power of a fan of the cleaning robot. However, an increase in a fan power usually leads to a larger size, louder noise, and higher consumption of electric energy and accordingly leads to an increase in overall costs of an electronic circuit system. When the fan power changes greatly, structural changes are required in combination to meet space, heat dissipation, and other requirements of the electronic circuit system in some embodiments, leading to a significant increase in costs. For this, it is necessary to provide a new solution to improve cleaning performance of the cleaning robot on a carpet.

[0465] The inventor of the present disclosure points out through extensive research that a cleaning efficiency (CE) of the cleaning robot on the to-be-cleaned surface is closely related to a dust agitation capability and a dust suction capability of the dust suction system (the dust suction assembly). Specifically, the dust agitation capability is reflected by a quantity of beats of a brush body on a cleaning surface in some embodiments. The dust suction capability is reflected by a gathering capability and a suction capability of garbage on a cleaning surface by a dust suction port in some embodiments. Based on this, embodiments of the present disclosure provide a technical solution of improving the dust agitation capability and the dust suction capability. Details are described as follows:

[0466] A feasible example that can increase a quantity of beats on a cleaning surface by a brush body of a roller brush assembly provided in the present disclosure is as follows: Any following manner or any combination of the following manners can improve a dust agitation capability of a dust suction system to some extent. Details are as follows:

[0467] 1. Increase a quantity of brush bodies of the roller brush assembly, which specifically include, in some embodiments: increasing a quantity of roller brushes, and / or increasing a quantity of brush bodies (for example, strips, or bristles) on a single roller brush.

[0468] 2. Increase a rotational speed of the roller brush.

[0469] 3. Increase a beating strength on a ground by the roller brush, which specifically includes, in some embodiments: increasing an interference between the brush body and the cleaning surface.

[0470] 4. Change a dust agitation angle or direction, which specifically includes, in some embodiments: adjusting an angle or a direction of bristles, adjusting a mounting angle and a rotational direction of a roller brush on a body, and the like. In a configuration with more than one roller brush, a combination manner of the roller brushes is further adjusted to further optimize the dust agitation capability in some embodiments. The adjustment of the combination manner specifically includes, in some embodiments: cooperation of rotational speeds, cooperation of rotational directions, cooperation of mounting angles, cooperation of materials of brush bodies, cooperation of a beating order of the brush bodies, and / or the like.

[0471] A feasible example that increases a gathering capability of garbage on a cleaning surface by a dust suction system (also referred to as a dust suction assembly) further provided in the present disclosure is as follows: Any following manner or any combination of the following adjustment manners can improve a dust suction capability of the dust suction system to some extent.

[0472] 1. Increase a pass rate of garbage during gathering toward a dust suction port.

[0473] 2. Increase a coverage area of the dust suction port.

[0474] A feasible example that increases a suction capability of garbage on a cleaning surface by a dust suction system further provided in the present disclosure is: any following manner or any combination of the following manners can improve a dust suction capability to some extent.

[0475] 1. Improve a structure of a dust suction port, and guide a flowing path of an air flow formed by a negative pressure at the dust suction port.

[0476] 2. Improve a negative pressure in a coverage region of the dust suction port, and adjust a capability of carrying a foreign object by an air flow at the dust suction port.

[0477] For ease of understanding, a cleaning robot with movable sealing provided in the present disclosure is described below by using an example in which the first blocking member (a blocking member is used for description below) is movably disposed on the first roller brush support portion, to block the first roller brush, the second blocking member is a part of the second roller brush support portion, to block the second roller brush, and the first blocking member, the first roller brush support portion, and the second roller brush support portion surround to form the cavity configured to accommodate the roller brush assembly and with reference to the accompanying drawings. As shown in FIG. 3 and FIG. 9, the dust suction system (corresponding to the dust suction assembly) of the cleaning robot 100 is disposed on the body 10. The dust suction system of the cleaning robot includes a roller brush mechanism, a sealed adjustment mechanism 11 (a movable sealing structure including the first blocking member and the traction unit), a fan (corresponding to the dust suction fan), and an air duct 240. The roller brush mechanism includes a housing 210 and a roller brush assembly 220. The roller brush assembly 220 is disposed in the housing 210. A dust suction port 12 that allows the roller brush assembly 220 to contact a ground is opened in the housing. One end of the air duct 240 is located at an upper portion of the dust suction port, and is connected to the housing 210. The fan is disposed at the other end of the air duct 240. Garbage at the dust suction port is transferred to a dust collection box through the air duct 240 under the action of a suction force generated by the fan.

[0478] In the embodiments of the present disclosure, as shown in FIG. 20 and FIG. 21, the dust suction port is configured to expose the roller brush assembly 220, and the roller brush assembly 220 contacts a ground through the dust suction port 12 in some embodiments. The dust suction port 12 in this example is disposed to be rectangular. In an example, the structure of the dust suction port is not limited to a rectangle, and has another shape in some embodiments. In a cleaning process of the cleaning robot, the dust suction port is in contact with a ground. When the roller brush assembly rotates to beat a cleaning surface to make a foreign object separated from the cleaning surface, the fan rotates to generate a negative pressure between an inside and an outside of the dust suction port, and an external air flow flows into the dust suction port through rectangular edges of the dust suction port under the action of the negative pressure to suck the foreign object in some embodiments, to implement cleaning of the ground.

[0479] In the embodiments of the present disclosure, the cleaning robot 100 includes at least a dust suction system, configured to clean a to-be-cleaned surface. In addition, an assembly that performs floor mopping, floor washing, or another function is configured on the cleaning robot 100 in some other embodiments.

[0480] In some examples, as shown in FIG. 4 and FIG. 5, a dust suction system 1 of the cleaning robot 100 includes a roller brush mechanism and a sealed adjustment mechanism 11. The roller brush mechanism includes a housing 210 and a roller brush assembly 220. The roller brush assembly 220 is disposed in the housing 210. A dust suction port that allows the roller brush assembly 220 to contact a to-be-cleaned surface is opened in the housing 210. When the roller brush assembly rotates to beat the cleaning surface to make a foreign object separated from the cleaning surface, the foreign object is sucked into the dust collection box through the dust suction port under the action of the negative pressure. The sealed adjustment mechanism 11 is disposed on the housing. In a cleaning process of the cleaning robot, the sealed adjustment mechanism 11 adjusts or stabilizes at least part time the negative pressure generated at the dust suction port.

[0481] In some examples, that the sealed adjustment mechanism 11 adjusts or stabilizes at least part time the negative pressure generated at the dust suction port includes at least stabilizing and adjusting a flowing path of an air flow formed at the dust suction port, and adjusting and stabilizing a capability of carrying a foreign object by the air flow at the dust suction port.

[0482] In some examples, referring to FIG. 5, the sealed adjustment mechanism 11 includes a blocking member 110 (corresponding to the first blocking member, here numbering and description are provided with respect to the first blocking member as an example the first blocking member as an example, and similarly the same logic applies to the second blocking member). Relative positions of the blocking member 110, and the housing are fixed. In a process in which the cleaning robot 100 performs a cleaning task, the sealed adjustment mechanism 11 forms a closed surface of an air flow passage on a front side of the cleaning robot in a traveling direction. The closed surface is located at a front portion of the housing on a side of the cleaning robot 100 in the traveling direction, to adjust the air flow passage at the dust suction port. Specifically, FIG. 6 is a schematic state diagram of the blocking member 110 cooperating with the housing in the traveling direction of the robot or another cleaning device, and is used for assisting in describing a process of adjusting or stabilizing the negative pressure generated at the dust suction port by a sealed blocking mechanism. As shown in FIG. 6, the sealed adjustment mechanism 11 forms the closed surface of the air flow passage on the front side of the cleaning robot in the traveling direction. Specifically, an end of the blocking member facing a ground floats on a carpet or keeps a very small clearance, to block an air flow to some extent, so that more air flows flow between the roller brush and the cleaning surface, thereby enhancing a capability of sucking a foreign object on the carpet. In another aspect, the blocking member forms the closed surface of the air flow passage on the front side of the cleaning robot in the traveling direction, and keeps a small clearance from a surface of a carpet, to increase sealing performance between an inside and an outside of the dust suction port, which helps to increase and maintain a pressure difference between an inside and an outside of the dust suction port, so that the capability of sucking a foreign object of the dust suction system can be further improved.

[0483] In some examples, on a side of the robot in the traveling direction, tooth-shaped bosses 2301 are disposed at intervals on the housing 210 in some embodiments, and air flow channels are formed between the tooth-shaped bosses 2301. The blocking member 110 is disposed in front of the tooth-shaped bosses 2301, and can close notches between the tooth-shaped bosses 2301 in a traveling process of the cleaning robot 100, to form the closed surface. When the cleaning robot 100 cleans a carpet or another soft ground, closing of the blocking member 110 obstructs an air flow passage in the dust suction port in a traveling direction of the cleaning robot 100, to enable an air flow to flow through a contact surface between the roller brush and the carpet centrally, so that a capability of sucking garbage on a cleaning surface by the dust suction port can be improved. In some examples, the tooth-shaped bosses 2301 are omitted in some embodiments, and a manner equivalent to the foregoing blocking member 110 is still used in some embodiments to improve the negative pressure in the coverage region of the dust suction port, thereby improving the capability of sucking garbage on a cleaning surface by the dust suction port.

[0484] In some examples, the housing 210 is disposed as a detachable part, and the dust suction port is provided at the detachable part. In some embodiments, as shown in FIG. 9, the housing 210 includes a clamped roller brush support 230, and the roller brush support 230 is a detachable part of the housing 210, to facilitate assembly and disassembly of a roller brush by a user.

[0485] In an embodiment, tooth-shaped bosses are disposed on the roller brush support 230.

[0486] For example, the blocking member 110 is made of plastic, rubber, silicone, or another material in some embodiments. A shape of the blocking member 110 is a plate shape, a strip shape, a belt shape, or the like in some embodiments. Further, the blocking member 110 is disposed on the roller brush support, and is filled on the notches in a tooth-to-tooth form in some embodiments, as shown in FIG. 5. The blocking member 110 and the tooth-shaped boss on the roller brush support jointly form the closed surface in the traveling direction of the cleaning robot 100. Alternatively, the blocking member 110 directly blocks an outer side or an inner side of the roller brush support facing the traveling direction of the cleaning robot 100, and blocks the notches between the tooth-shaped bosses 2301 through a continuous face, thereby implementing closing, as shown in FIG. 7. In this embodiment, the tooth-shaped bosses 2301 are flat teeth shown in FIG. 8 in some embodiments, or are, for example, sharp teeth shown in FIG. 8 in some embodiments. The sharp teeth guide foreign objects that enter the notches in some embodiments, to increase a pass rate of the foreign objects. Further, the roller brush support and the blocking member 110 are combined in a bonding manner, a clamping manner, or another manner in some embodiments. In some embodiments, the blocking member 110 and the roller brush support are integrally formed. A material, a shape, and a mounting manner of the blocking member, positioning and limiting between the blocking member and the roller brush, and the like are not specifically limited in the embodiments of the present disclosure. A person skilled in the art may make adaptive adjustments according to a specific structural form of a product.

[0487] The blocking member 110 further forms the closed surface in front of or behind the tooth-shaped bosses in some embodiments. Alternatively, intervals between tooth-shaped bosses are filled through notch matching to form the closed surface.

[0488] In some examples, the blocking member 110 has a particular elasticity. Therefore, the blocking member 110 has a self-adjustment capability in some scenarios, for example, when colliding with an obstacle, can deform due to the pressing of the obstacle and restore a state before the collision when the collision is released, to avoid damage, or when touching a foreign object with a large size, can adapt to pressing of foreign objects to deform, thereby improving a pass rate of foreign objects gathering at the dust suction port and automatically restore a previous state when the pressing of the foreign objects is released. In some embodiments, the blocking member 110 is made of a rubber material, with a hardness ranging from 60 HA to 80 HA.

[0489] In some examples, the hardness of the blocking member 110 can be improved, so that the blocking member remains in a more stable form in a dust suction process. For example, a material with a hardness greater than 80 HA is selected to manufacture the blocking member 110 in some embodiments, or hard plastic is used in some embodiments.

[0490] It is to be noted that, in the operation of improving the capability of sucking garbage on a cleaning surface through the closing of the blocking member 110, a balance needs to be reached between a hardness parameter of the blocking member 110 and stability of a form of the blocking member. When the hardness is larger, the blocking member 110 can withstand a larger negative pressure, to keep the stability of the form of the blocking member. When the hardness is lower, the self-adjustment capability of the blocking member 110 is enhanced, and in some scenarios the blocking member can deform to allow garbage to gather near the dust suction port through the notches between the tooth-shaped protrusions. This also helps to improve a garbage suction capability.

[0491] To improve a cleaning efficiency of a carpet or another soft ground by the cleaning robot 100, the inventor of the present disclosure points out that the blocking member 110 can keep a basic closing effect during cleaning on a carpet. This includes at least that a basically stable form of the closed surface can be kept under the action of the negative pressure at the dust suction port. Accordingly, the present disclosure further provides an example.

[0492] In some examples, a guide or support structure is at least disposed between the tooth-shaped bosses 2301 and the blocking member 110. The blocking member 110 keeps the basically stable form of the closed surface through a deformation property of the blocking member under the action of the negative pressure or through limiting of at least one of the guide structure and the support structure.

[0493] It should be understood that, to keep the basically stable form of the closed surface, a requirement of the hardness of the blocking member 110 can be lowered by adding a limiting structure, or even flexible plastic is used in some embodiments.

[0494] In some examples, the blocking member 110 keeps the basically stable form of the closed surface through a property of a material of the blocking member. In some embodiments, the hardness of the blocking member ranges from 70 HA to 80 HA.

[0495] Further, as an example, after the blocking member 110 is assembled, a ground distance of an end of the blocking member facing the cleaning surface is less than or equal to 2 mm. It is found in experiments that during cleaning of a carpet, within the distance range, an edge of the blocking member 110 contacts a surface of the carpet to form a basically stable joining face in some embodiments, so that the closeness between the dust suction port and the carpet can be improved in a cleaning process, and a stable and larger pressure difference is generated between the inside and the outside of the dust suction port, to obtain better carpet dust suction performance. It should also be noted that, the resistance of the ground is increased when the clearance between the dust suction port and the ground is excessively small, affecting the performance of a walking system, which further affects the cleaning performance of the cleaning robot.

[0496] The ground distance of the end of the blocking member 110 facing the cleaning surface is affected by different factors, for example, a material of a soft ground, a hardness of the soft ground, a pile length of a carpet, and the like. In some examples, an adjustment is made within a larger range in some embodiments. For example, it is set that the ground distance of the end of the blocking member 110 facing the cleaning surface between ranges from 0 mm to 5 mm.

[0497] It is described in the foregoing embodiments that the blocking member 110 of the sealed adjustment mechanism 11 forms the closed surface in a direction of the cleaning robot 100, so that a negative pressure between the inside and the outside during dust suction of the dust suction port can be improved, a flowing path of an air flow generated by the negative pressure at the dust suction port can be adjusted, and a basically stable negative pressure at the dust suction port can be kept, which further helps to improve the garbage suction capability during cleaning of a carpet or another soft ground.

[0498] It is to be understood that, in the foregoing embodiments, the sealed adjustment mechanism 11 at least acts on the dust suction port in a process of cleaning a carpet or another soft ground in some embodiments. The solution is used as one of the manners of improving the cleaning efficiency of the cleaning robot 100 in some embodiments, and the solution and other factors related to the dust agitation capability and the dust suction capability described above are combined and optimized and then applied to the cleaning robot 100, to improve the garbage suction capability of the cleaning robot 100 during cleaning of a carpet or another soft ground, so that the cleaning robot 100 can adapt to cleaning requirements of different scenarios.

[0499] In an embodiment, the roller brush mechanism is disposed at a front portion of the body 10. As shown in FIG. 20 and FIG. 21, the cleaning robot 100 can conveniently clean a cleaning surface and side and corner positions of the cleaning surface, so that a cleaning effect of the cleaning robot can be improved. Moreover, the roller brush mechanism is disposed at a front end of the body, so that the cleaning robot 100 can first clean a region in front in a walking direction of the cleaning robot, a possibility that a walking system 2 causes secondary pollution to the cleaning surface can be reduced, and a better cleaning effect can be further obtained.

[0500] In an embodiment, the roller brush mechanism is disposed at the front portion of the body, and the body is built in a D shape, as shown in FIG. 20 and FIG. 21. It should be understood that, when the roller brush mechanism is located at the front portion of the D-shaped body, it represents that the roller brush mechanism is located at the front portion of the body in the traveling direction of the cleaning robot 100, and the roller brush mechanism can be built to cover a maximum length of the D-shape body in the traveling direction.

[0501] In an embodiment, the roller brush mechanism is disposed at the front portion of the body, and the body is built in a D shape. The blocking member 110 of the sealed adjustment mechanism 11 forms the closed surface in the direction of the cleaning robot 100. The sealed adjustment mechanism 11 and the roller brush mechanism at least act on the dust suction port in a process of cleaning a carpet or another soft ground in some embodiments.

[0502] In this embodiment, the dust agitation capability of the dust suction system 1 can be further improved by improving a beating capability of the roller brush assembly 220 on the cleaning surface. For example, the roller brush assembly 220 is switched from a single roller brush to double roller brushes (as shown in FIG. 20 and FIG. 21), a material, a beating direction, and a mounting position of the brush body of the roller brush are added, and the like. For a specific arrangement, refer to any feasible example of the foregoing dust agitation capability. Details are not described again in this embodiment.

[0503] Based on the foregoing embodiment, in the embodiments of the present disclosure, the sealed adjustment mechanism 11 is configured to switch or move between two preset positions on the housing.

[0504] In some examples, the sealed adjustment mechanism 11 includes a blocking member, a traction unit, and a reset unit. The traction unit is disposed on the housing. The traction unit is configured to drive the blocking member to switch or move between a first position and a second position of the housing.

[0505] Particularly, in some examples, a size of an opening of the blocking member relative to a ground can be adjusted by adjusting the blocking member to move between the first position and the second position. When the opening of the blocking member relative to the ground in the housing is larger, a pass rate of foreign objects at the dust suction port is higher. When the opening of the blocking member relative to the ground in the housing is smaller, the pass rate of foreign objects at the dust suction port is lower. However, the pressure difference of the negative pressure formed at the dust suction port can be effectively improved, which helps to improve and stabilize the capability of carrying a foreign object by the air flow at the dust suction port. The adjustment of the size of the opening of the blocking member relative to the ground is further specifically controlled according to a garbage type and a garbage amount in some embodiments. For example, according to a ground type, it is set that a corresponding size of the opening during cleaning of a carpet is less than a corresponding size of the opening during cleaning of a hard ground. According to a garbage size, it is set that a size of the opening during suction of large-size or heaped garbage is greater than a corresponding size of the opening during suction of small-size garbage. Further, an adjustment is made according to a person's instruction (for example, remote control with an APP). For fixed-point cleaning or suction of a large amount of garbage, corresponding instruction control is set to adjust the size of the opening in some embodiments.

[0506] In some examples, a ground spacing H2 of an end of the blocking member facing a ground when the blocking member is located at the first position of the housing is greater than a ground spacing H1 of the end of the blocking member facing the ground when the blocking member is located at the second position of the housing.

[0507] In some examples, as shown in FIG. 12, when the blocking member is located at the second position, a distance L between an end portion of the blocking member and a tangent of the closest roller brush with the cleaning surface is less than or equal to a half of a radius R of an outer contour of the roller brush. Particularly, a value of the distance L affects a bending level of a closed surface formed when the blocking member is located at the second position, and can further affect whether a foreign object agitated by the roller brush can be sucked away through a path as short as possible. When the distance L is smaller, an air flow path is shorter, and an air flow passing through the roller brush and the cleaning surface can suck a foreign object into the air duct sooner, thereby improving the capability of sucking a foreign object. In another aspect, when the distance L is smaller, the bending level of the closed surface is larger, so that hindrance on the air flow can be reduced.

[0508] In some examples, the blocking member is made of one of plastic, rubber or non-woven fabric.

[0509] In some examples, the reset unit is one of a torsion spring or a compression spring.

[0510] In some examples, the traction unit includes a linkage drive structure or a hinge drive structure.

[0511] In some examples, the sealed adjustment mechanism 11 of the dust suction system 1 is further configured to can make the blocking member 110 of the sealed adjustment mechanism switch between the first position and the second position. When the blocking member 110 is located at the first position, the blocking member 110 avoids the air flow passage of the dust suction port in the traveling direction of the cleaning robot 100. When the blocking member 110 is located at the second position, the blocking member 110 acts at least part time to adjust a flowing path of an air flow in the traveling direction of the cleaning robot 100 or the pressure difference between the inside and the outside of the dust suction port, thereby improving the capability of sucking a foreign object by the dust suction port.

[0512] In some embodiments, the blocking member switches freely in two directions at any position between the first position and the second position in some embodiments.

[0513] In some examples, the sealed adjustment mechanism 11 is disposed on the body 10.

[0514] In some examples, the roller brush mechanism is configured to be floatable on the body 10, and specifically, can vertically move in a preset space of the body to move away or toward a ground in a cleaning process of the cleaning robot.

[0515] Further, the sealed adjustment mechanism 11 is disposed on the housing in some embodiments, or is disposed on the body in some embodiments. When the roller brush mechanism is configured to be floatable on the body 10, in some embodiments, the sealed adjustment mechanism 11 is disposed on the housing 210, to enable the sealed adjustment mechanism to move along with the roller brush mechanism, to keep a relatively stable state between the sealed adjustment mechanism and the roller brush mechanism.

[0516] As discussed above, FIG. 6 is a schematic state diagram of the blocking member 110 cooperating with the housing 210 in the traveling direction of the robot, and is used for assisting in describing a process of adjusting or stabilizing the negative pressure generated at the dust suction port by the sealed adjustment mechanism. When the blocking member is located at the second position, the sealed adjustment mechanism 11 forms the closed surface of the air flow passage on the front side of the cleaning robot in the traveling direction. Specifically, an end of the blocking member facing a ground floats on a carpet or keeps a very small clearance, to block an air flow to some extent, so that more air flows flow between the roller brush and the cleaning surface, thereby enhancing a capability of sucking a foreign object on the carpet. In another aspect, the blocking member forms the closed surface of the air flow passage on the front side of the cleaning robot in the traveling direction, and keeps a small clearance from a surface of a carpet, to increase sealing performance between an inside and an outside of the dust suction port, which helps to increase and maintain a pressure difference between an inside and an outside of the dust suction port, so that the capability of sucking a foreign object of the dust suction system can be further improved. When the blocking member is located at the first position, on a side of the robot in a traveling direction, the air flow generated by the negative pressure mostly flow into an air duct from a side of the dust suction port facing the traveling direction of the robot and adjacent lateral sides, and an interval between the dust suction port and the cleaning surface is large, and helps large-particle foreign objects to enter the dust suction port, which is therefore beneficial to a pass rate of large-particle foreign objects on a hard ground.

[0517] It is to be noted that, when the cleaning robot 100 cleans a soft ground, it is set in some embodiments that the blocking member 110 of the sealed adjustment mechanism 11 is located at the second position, and the blocking member 110 forms the closed surface in the direction of the cleaning robot 100, to improve the dust suction capability. When the cleaning robot 100 cleans a hard ground, it is in some embodiments set that the blocking member 110 of the sealed adjustment mechanism 11 is located at the first position, and the blocking member 110 avoids the air flow passage to allow gathering of large-particle garbage on the hard ground toward the dust suction port. Accordingly, when the blocking member 110 is located at the first position, a gathering capability of garbage on a hard ground by the cleaning robot 100 can be improved, which is especially suitable for cleaning large-particle garbage on a hard ground.

[0518] In a specific embodiment, the working principle of the blocking member 110 is controlling the position of the blocking member 110 and controlling the time at which the blocking member 110 closes the air flow passage in the traveling direction of the cleaning robot 100. It is to be understood that, a control system of the cleaning robot 100 is configured to send a control instruction to the dust suction system 1 in some embodiments, to control how and when the blocking member 110 of the sealed adjustment mechanism 11 switches positions. The example of this process further involves other necessary arrangements that the control system of the cleaning robot 100 can transfer a related control instruction and the sealed adjustment mechanism 11 can execute an instruction. Therefore, details are not described again in the present disclosure. The following further provides an example of a feasible example of the dust suction system 1, for ease of understanding of the main technical content of the present disclosure.

[0519] In a specific embodiment, on a side facing the traveling direction of the robot, tooth-shaped bosses 2301 are disposed at intervals, and the air flow passage includes an air flow path formed by a notch between adjacent tooth-shaped bosses 2301.

[0520] In a specific embodiment, the sealed adjustment mechanism 11 includes the blocking member 110, and the sealed adjustment mechanism 11 is configured to can make the blocking member 110 switch between the first position and the second position. When the blocking member 110 is located at the first position, the blocking member 110 avoids the air flow passage. When the blocking member 110 is located at the second position, the blocking member 110 at least partially blocks the air flow passage.

[0521] In an example application, as shown in FIG. 9, when the blocking member 110 is located at the first position, the ground distance H1 of the end of the blocking member 110 facing the ground is less than 2 mm. When the blocking member 110 is located at the second position, the ground distance H2 of the end of the blocking member 110 facing the ground ranges from 6 mm to 9 mm. It is to be noted that, when the blocking member 110 is located at the second position, the ground distance H2 of the end of the blocking member 110 facing the ground is adjusted based on a height of the housing 210, a size of the tooth-shaped boss, the air flow passage, among other factors in some embodiments. In some examples, it is further set in some embodiments that the ground distance H2 of the end of the blocking member 110 facing the ground ranges from 4 mm to 12 mm.

[0522] In the embodiments of the present disclosure, the adjustment of the position of the blocking member corresponds to a change in the area of the opening in the traveling direction of the robot or the ground distance in some embodiments. In any of the foregoing manners, the blocking member is configured to form the closed surface, to adjust the flowing path of the air flow in the dust suction port, a pressure difference in the negative pressure, and the stability of the negative pressure.

[0523] In a specific embodiment, referring to FIG. 9, the sealed adjustment mechanism 11 includes a traction unit 120. The traction unit 120 is configured to drive the blocking member 110 to switch between the first position and the second position. The traction unit 120 is used as an execution mechanism of the foregoing control instruction, and drives the blocking member 110 to switch between the first position and the second position and stop at the first position or the second position as required in some embodiments.

[0524] In a specific embodiment, the traction unit 120 includes a capstan 121, a rope 122, and a torsion spring. One end of the rope 122 is fixed through the capstan 121, and the other end is connected to the blocking member 110. Referring to FIG. 10, the capstan 121 includes a motor-driven rotating shaft. A first mounting portion 1101 configured to connect to the rope 122 is disposed on the blocking member 110. When the motor-driven rotating shaft rotates, the rope 122 is driven by the motor-driven rotating shaft, so that a pulling force can be transferred to the blocking member 110. Specifically, it is set in some embodiments that the rope is tightened when the motor-driven rotating shaft rotates in the first direction, to pull the blocking member 110 to the first position. In contrast, when the motor-driven rotating shaft rotates in a direction opposite to the first direction, the rope 122 is extended, and the blocking member 110 displaces to the second position. To implement stable state switching of the blocking member 110 between the first position and the second position, a torsion spring is further disposed on the traction unit 120, and a second mounting portion 2102 is further disposed on the housing 210. As shown in FIG. 10 to FIG. 12, the rope 122 passes through the second mounting portion 2102 to be connected to the blocking member 110. The torsion spring is positioned on the housing 210, and the blocking member 110 includes a limiting structure for the torsion spring. Based on the structure shown in the figure, it is to be understood that, in a process in which the rope 122 tightens to pull up the blocking member 110, a second limiting portion can limit and guide the rope 122, and the torsion spring can form a counterforce on the blocking member 110 for limiting and damping. For this, when the blocking member 110 needs to be switched from the second position to the first position, it is set that the pulling force of the rope 122 is greater than a damping force of the torsion spring on the blocking member 110, and the blocking member 110 can move to the first position and can remain at the first position, as shown in FIG. 11. When the blocking member 110 needs to be switched from the first position to the second position, the rope 122 is extended, the counterforce of the torsion spring is transferred to the blocking member 110 through the limiting structure, so that the blocking member 110 can be pushed from the first position to the second position, as shown in FIG. 12. Further, the blocking member 110 can be kept at any position between the first position and the second position by adjusting an extension amount of the rope 122.

[0525] In some other examples, the traction unit 120 includes a capstan 121, a rope 122, and a compression spring 123. Different from the foregoing example, the compression spring 123 is used in place of the torsion spring to limit and damp the blocking member 110 in this example. As shown in FIG. 13, one end of the compression spring 123 is fixedly connected to the blocking member 110, and the other end of the compression spring 123 abuts against a first support portion 2101 disposed on the housing 210. When the blocking member 110 needs to be switched from the first position to the second position, the rope 122 is extended, the compression spring 123 is supported by the first support portion 2101 to transfer an elastic force to the blocking member 110, so that the blocking member 110 can be pushed from the first position to the second position. When the blocking member 110 needs to be switched from the second position to the first position, it is set that the pulling force of the rope 122 is greater than a damping force of the compression spring 123 on the blocking member 110, and the blocking member 110 can move to the first position and can remain at the first position. For details of the process, refer to a schematic diagram of a driving principle of the traction unit 120 shown in FIG. 14. As shown in the figure, a second support portion 2103 is further disposed on the housing 210 in some embodiments, and the second support portion 2103 is configured to limit and guide the rope 122.

[0526] In still some other examples, the traction unit 120 uses a linkage drive manner to implement position switching of the blocking member 110. Specifically, as shown in FIG. 15, the traction unit 120 includes a motor-driven rotating shaft, a cam 126, and a linkage 125. One end of the linkage 125 is connected to the motor-driven rotating shaft by the cam 126, and the other end of the linkage 125 is fixedly connected to the blocking member 110. When the motor-driven rotating shaft rotates, a driving direction of the linkage 125 is adjusted through the cam 126, to drive the blocking member 110 to displace. When the blocking member 110 needs to be switched from the first position to the second position, the motor-driven rotating shaft rotates to enable the linkage 125 to drive the blocking member 110 to displace from the first position to the second position. When the blocking member 110 needs to be switched from the second position to the first position, the motor-driven rotating shaft rotates in an opposite direction, to drive the blocking member 110 to displace from the second position to the first position. For details of the process, refer to a schematic diagram of a driving principle of the traction unit 120 shown in FIG. 16.

[0527] An example of the traction unit 120 provided above focuses on a necessary example structure for a working principle for of implementing position switching of the blocking member 110 of the sealed adjustment mechanism 11. A person skilled in the art should understand that in a specific application process, there are usually restrictions of other factors such as a structure and an appearance of a product of the cleaning robot 100. Accordingly, the technical solution that the present disclosure seeks to protect further includes technical content of adaptive adjustments made in cooperation with a model, limiting or avoidance design based on the foregoing example content to conform to design requirements of a specific product.

[0528] Particularly, in this embodiment, when the blocking member 110 is located at the second position, in a process of performing a cleaning task by the cleaning robot 100, the blocking member 110 is used for forming the closed surface of the air flow passage. To keep a relatively stable dust suction effect, it is also set that in a process of performing a cleaning task by the cleaning robot 100, the blocking member 110 can keep the basically stable form of the closed surface through a deformation property of the blocking member under the action of the negative pressure or through limiting of at least one of the guide structure and the support structure. For this, the material and model related to the blocking member 110 and the examples for keeping limiting, guiding, and the like in a stable form specifically recorded in the foregoing embodiments is used in some embodiments. Details are not described again in this embodiment.

[0529] Further, in an embodiment of the present disclosure, the roller brush mechanism is disposed at the front end of the body.

[0530] In an embodiment, the roller brush mechanism is disposed at the front portion of the body, and the body is built in a D shape.

[0531] Further, in this embodiment, the dust agitation capability of the dust suction system 1 can be further improved by improving a beating capability of the roller brush assembly 220 on the cleaning surface. For example, a single roller brush is changed to double roller brushes, a material, a direction, and a position of the brush body of the roller brush are added, and the like. For a specific arrangement, refer to any feasible example of the foregoing dust agitation capability. Details are not described again in this embodiment.

[0532] Based on the foregoing cleaning robot 100, the present disclosure further provides a cleaning robot 100. In this embodiment, a control system, a dust suction system 1, a sensing system, and a power supply system of the cleaning robot 100 are disposed in combination, to further improve a cleaning efficiency of the cleaning robot 100. Particularly, in this embodiment, it is set that the position of the blocking member 110 is switchable, to ensure cleaning performance on both a hard ground and a soft ground. Details are described as follows:

[0533] In some examples, refer to FIG. 1 and FIG. 2. In the figures, the cleaning robot 100 includes a control system (also referred to as a controller, or a control apparatus), a dust suction system (also referred to as a dust suction assembly) 1, a power supply system (also referred to as a power supply apparatus, or a power supply assembly), a sensing system (also referred to as a sensing assembly), and a walking system (also referred to as a movement assembly) 2. The sensing system of the cleaning robot 100 includes at least one of a first sensor 101 configured to recognize a garbage size and a second sensor 102 configured to recognize a ground material. The dust suction system 1 of the cleaning robot 100 includes a sealed adjustment mechanism 11. The sealed adjustment mechanism 11 is configured to receive a control instruction of the control system, and switch the position of the blocking member 110 of the sealed adjustment mechanism according to the control instruction. For an example structure of implementing position switching of the blocking member 110 by the sealed adjustment mechanism 11, refer to the content recorded in the foregoing embodiments. Details are not described again in this embodiment. The control system is configured to control the dust suction system 1 based on garbage size information and type information of a to-be-cleaned surface that are obtained by the sensing system, to further improve the cleaning efficiency.

[0534] In some examples, the sensing system of the cleaning robot includes one or more of an AI object recognition sensor, a structural light module, or a TOF module, configured to detect or recognize a foreign object type, for example, hair clumps of a pet, heaped fragmentary garbage, large-size particle garbage, or the like.

[0535] In some examples, the control apparatus is configured to obtain a type of a to-be-cleaned surface based on information acquired by the sensing system in a normal cleaning mode, and automatically control the blocking member 110 to switch between the first position and the second position based on the type of a to-be-cleaned surface. In some embodiments, during cleaning on a soft ground, the control apparatus is configured to control the sealed adjustment mechanism 11 to switch the blocking member 110 to the second position through a control instruction. During cleaning on a hard ground, the control apparatus is configured to control the sealed adjustment mechanism 11 to switch the blocking member 110 to the first position through the control instruction.

[0536] The cleaning robot 100 in this embodiment includes technical effects in at least two aspects: In one aspect, when the control apparatus places the blocking member 110 at the second position through the control instruction, a problem of a low cleaning efficiency when the cleaning robot 100 cleans a soft ground can be resolved. In another aspect, when the control apparatus places the blocking member 110 at the first position through the control instruction, a problem that it is difficult for large-size garbage 01 to pass through an air flow passage when the cleaning robot 100 performs a cleaning task on a hard ground can be further resolved, thereby improving garbage gathering capability of the dust suction system 1. Related necessary technical information can be obtained through the foregoing embodiments. Details are not described again in this embodiment.

[0537] In some examples, the control apparatus is configured to obtain current position information of the cleaning robot 100 in a fixed-point region cleaning mode, determine a position relationship of the cleaning robot 100 relative to a fixed-point cleaning region based on the position information, and automatically control the blocking member 110 to switch between the first position and the second position based on the relative positions relationship. In an example, a carpet region as a fixed-point region, when the cleaning robot 100 performs cleaning inside the fixed-point cleaning region, the control apparatus is configured to control the sealed adjustment mechanism 11 to switch the blocking member 110 to the second position through a control instruction. When the cleaning robot 100 performs cleaning outside the fixed-point cleaning region, the control apparatus is configured to control the sealed adjustment mechanism 11 to switch the blocking member 110 to the first position through the control instruction.

[0538] In some examples, the control apparatus is configured to receive a control instruction sent by a mobile client, and automatically controls the blocking member 110 to switch between the first position and the second position based on the instruction. Specifically, when receiving a first control instruction indicating the blocking member 110 to switch to the second position, the control instruction is executed to switch the blocking member 110 to the second position. When receiving a second control instruction indicating to switch the blocking member 110 to the first position, the control instruction is executed to switch the blocking member 110 to the first position.

[0539] In some examples, the control apparatus is further configured to determine a size of an opening of the blocking member 110 relative to a ground based on one of a ground material, a garbage size, or a user control instruction. In this embodiment, the size of the opening is represented by a distance between an end of the blocking member 110 close to the ground and the ground. The traction unit 120 in the foregoing embodiment is used as an example. The control system is configured to control a rotation amount of the motor-driven rotating shaft through a control instruction to adjust the size of the opening of the blocking member 110 relative to the ground.

[0540] In a specific embodiment, the opening of the blocking member 110 relative to the ground when the cleaning robot 100 cleans a hard ground is larger than the opening when the cleaning robot 100 cleans a soft ground.

[0541] In a specific embodiment, the opening of the blocking member 110 relative to the ground when the cleaning robot 100 recognizes large-size garbage 01 is larger than the opening when the cleaning robot 100 does not recognize large-size garbage 01.

[0542] In a specific embodiment, user instruction information received by the cleaning robot 100 includes control information of the size of the opening, and correspondingly adjust the size of the opening of the blocking member 110 relative to the ground based on the control information.

[0543] In this embodiment, the user control instruction is sent through the mobile client in some embodiments, or the control instruction is sent through a set webpage or by directly operating a main unit in some embodiments, or another remote interaction manner is used in some embodiments.

[0544] Further, the control system of the cleaning robot 100 is further configured to control an input power of a fan of the dust suction system 1. In a specific embodiment, the control system is configured to keep a same input power throughout a process of performing a cleaning task. In an example application, when the control system recognizes, based on information obtained by the sensing system, that the cleaning robot 100 performs cleaning on a soft ground, the input power of the fan is configured ranging from 60 W to 80 W.

[0545] In another specific embodiment, the control system is configured to determine the input power of the fan according to obtained type information of a to-be-cleaned surface. For example, a first power range is kept during cleaning of a soft ground, and a second power range is kept during cleaning of a hard ground. The first power range is greater than the second power range. In an example application, when the control system recognizes, based on the information obtained by the sensing system, that the cleaning robot 100 performs cleaning on a soft ground, the input power is configured ranging from 60 W to 150 W. When the control system recognizes, based on the information obtained by the sensing system, that the cleaning robot 100 performs cleaning on a hard ground, the input power is configured ranging from 15 W to 35 W.

[0546] In this embodiment, the dust agitation capability of the dust suction system 1 can be further improved by improving a beating capability of the roller brush assembly 220 on the cleaning surface. For example, a single roller brush is changed to double roller brushes, a material, a direction, and a position of the brush body of the roller brush are added, and the like. For a specific arrangement, refer to any feasible example of the foregoing dust agitation capability. Details are not described again in this embodiment.

[0547] This embodiment further provides a schematic diagram of control based on an example of the foregoing cleaning robot 100. As shown in FIG. 17, when the cleaning robot 100 starts a cleaning task, the control system is configured to: obtain, through the sensing system, first information that represents a to-be-cleaned surface and is acquired by the sensing system; determine type information of the to-be-cleaned surface in the current cleaning task based on the first information; when it is detected that a current to-be-cleaned surface is a soft ground, control the sealed adjustment mechanism 11 to place the blocking member 110 at the second position; control the input power of the fan to be a second power; when detecting that a current to-be-cleaned surface is a hard ground, control the sealed adjustment mechanism 11 to place the blocking member 110 at the first position; and control the input power of the fan to be a first power. Referring to FIG. 18, in a process of performing a cleaning task, the control system is further configured to: obtain, based on the sensing system, second information representing a garbage size; determine a control instruction of the sealed adjustment mechanism 11 based on the second information; when large-particle garbage is detected, generate a first instruction, where the first instruction indicates the sealed adjustment mechanism 11 to place the blocking member 110 at the second position; and when a large-particle condition is not met, generate a second instruction, where the second instruction indicates the sealed adjustment mechanism 11 to place the blocking member 110 at the first position.

[0548] In an embodiment, as shown in FIG. 19, when it is detected that the cleaning robot 100 cleans a soft ground, the control system is configured to: obtain a current rotational speed of the roller brush; determine whether the current rotational speed meets a preset rotational speed range; and when the rotational speed exceeds the preset rotational speed range, control an input power of the roller brush motor to adjust the rotational speed into the preset rotational speed range. It is to be noted that, when the roller brush assembly 220 includes at least two roller brushes, rotational speed adjustments of different roller brushes by the control apparatus are the same in some embodiments or are different in some embodiments. In some examples, the control of the roller brush assembly further includes control of a rotational direction of the roller brush in some embodiments.

[0549] In an example application, two roller brushes are disposed in the roller brush assembly 220 of the cleaning robot 100, and the two roller brushes rotate relatively in a process of a cleaning task.

[0550] In an example application, when it is detected that the cleaning robot 100 cleans a soft ground, the rotational speed of the roller brush is kept within a range of 1500 r / min to 1900 r / min range. The cleaning efficiency of the cleaning robot 100 on a soft ground can be kept greater than 35%.

[0551] In an example application, when it is detected that the cleaning robot 100 cleans a soft ground, the rotational speed of the roller brush is kept greater than 1200 r / min.

[0552] It is to be understood that, in this embodiment, the input power of the fan of the cleaning robot 100 and the rotational speed of the roller brush are both controlled within a preset value range in experiments. During actual application, these ranges of values are affected by structural differences of the dust suction system 1 of the cleaning robot 100, differences in to-be-cleaned surfaces, and different environments in some embodiments. To achieve the same cleaning effect, in this embodiment, the input power of the fan and the rotational speed of the roller brush are within wider ranges in some embodiments. For example, the input power of the fan ranges from 40 W to 100 W, and the rotational speed of the roller brush ranges from 500 r / min and 1600 r / min.

[0553] Further, in an embodiment of the present disclosure, the roller brush mechanism is disposed at the front end of the body.

[0554] In an embodiment, the roller brush mechanism is disposed at the front portion of the body, and the body is built in a D shape.

[0555] Further, in this embodiment, the dust agitation capability of the dust suction system 1 can be further improved by improving a beating capability of the roller brush assembly 220 on the cleaning surface. For example, a single roller brush is changed to double roller brushes, a material, a direction, and a position of the brush body of the roller brush are added, and the like. For a specific arrangement, refer to any feasible example of the foregoing dust agitation capability. Details are not described again in this embodiment.

[0556] Based on the foregoing embodiment, the embodiments of the present disclosure further provide a cleaning robot. A difference lies in that the roller brush mechanism of the cleaning robot in this embodiment is floatable relative to the body.

[0557] The hard ground in the embodiments of the present disclosure is a floor or tiles in some embodiments, and the soft ground is a ground with a carpet or another soft material in some embodiments.

[0558] The present disclosure provides another traction unit 120. The traction unit 120 uses gear drive to implement position switching of the blocking member 110. Specifically, as shown in FIG. 25 to FIG. 34, the traction unit 120 includes a drive mechanism 129, a first gear 127, and a second gear 128 that are sequentially connected. The second gear 128 is connected to the blocking member or the second gear 128 forms a part of the blocking member. When the drive mechanism 129 rotates along a drive shaft, the blocking member 110 is driven to move by adjusting driving directions of the first gear 127 and the second gear 128.

[0559] When the drive mechanism 129 rotates around the drive shaft in a first direction. The first gear 127 and the second gear 128 drive the blocking member 110 to switch from a first position to a second position. When the drive mechanism 129 rotates around the drive shaft in the second direction, the first gear 127 and the second gear 128 drive the blocking member 110 to switch from the second position to the first position. The second direction and the first direction are opposite.

[0560] In some examples, the first gear 127 is a drive gear, and the second gear 128 is a partial gear (for example, a sector-shaped gear) disposed on the blocking member. A radius of the drive gear is less than a radius of a sector-shaped gear.

[0561] In some examples, the drive mechanism 129 includes a drive motor and a reducer gearbox. The drive motor is connected to the first gear by the reducer gearbox. The first gear 127 and the second gear 128 form a part of a transmission system. In some examples, the blocking member 110 is built as a partial cylindrical structure that can rotate around a rotating axis and has the second gear 128. The blocking member 110 is driven by the drive motor of the drive mechanism 129 through the first gear 127 driven by the reducer gearbox.

[0562] Rotational centers of the blocking member and the roller brush are schematically shown. The rotational center of the blocking member of the partial cylindrical structure is A1. The rotational center of the roller brush is A2.

[0563] Because the blocking member has a large axial size, to ensure the smoothness of transmission, in some examples, referring to FIG. 33 and FIG. 34, in a length direction of the roller brush, the second gear 128 and the first gear 127 are disposed at each of two ends of the blocking member 110. A synchronous shaft 1271 is disposed between the first gears 127 at the two ends, to ensure the synchronous rotation of the first gears and drive the overall smooth movement of the blocking member.

[0564] To recognize opening and closing of the blocking member, further, the dust suction system further includes a detection assembly, disposed on a sealed adjustment mechanism, and configured to detect a state of the blocking member.

[0565] In some examples, the detection assembly includes an in-position detection sensor 130, disposed on the blocking member 110, and configured to perform in-position detection on the opening and closing of the blocking member.

[0566] In some examples, the in-position detection sensor 130 includes an open state in-position detection sensor 1301 and a closed state in-position detection sensor 1302, which are respectively configured to perform in-position detection on an open state and a closed state of the blocking member 110.

[0567] Further, when the in-position detection sensor 130 detects an in-position signal (including an open in-position signal and a closed in-position signal) of the blocking member 110 and sends the in-position signal to a control module, especially sends the in-position signal to the control module through an instant messaging technology, the control module cuts off power of the drive mechanism 129 configured to drive the blocking member 110 to move, to prevent the drive motor or the transmission system of the drive mechanism from overload damage.

[0568] In some examples, the in-position detection sensor 130 uses a microswitch.

[0569] It is to be noted that, one in-position detection sensor is configured to perform in-position detection on both the opening and closing of the blocking member in some embodiments. In addition, the in-position detection sensor uses a transmitting-receiving light detector in some embodiments, or includes a light transmitter and a light receiver that are correspondingly disposed in pair in some embodiments, and perform in-position detection according to a principle that opening and closing affect a light ray. For this, this is not limited in this embodiment.

[0570] To improve the reliability of switching the blocking member, further, the dust suction system further includes a mechanical limiting portion 131, configured to perform mechanical limiting on the opening and closing of the blocking member 110.

[0571] For example, when the detection assembly, especially the in-position detection sensor 130, fails or is faulty, the mechanical limiting portion is configured to limit the movement of the blocking member.

[0572] The mechanical limiting portion 131 is disposed to forcefully limit the opening and closing of the blocking member 110, to prevent the drive motor of the drive mechanism 139 configured to drive the blocking member 110 to move and the transmission system from overload damage, thereby improving reliability.

[0573] In some examples, the mechanical limiting portion includes an open limiting portion 1311 and a closed limiting portion 1312, which are respectively configured to limit the opening and closing of the blocking member.

[0574] In some examples, the control module further has a motor overload protection procedure for the blocking member. The motor overload protection procedure can handle some emergencies, for example, in a case that the in-position detection sensor 130 fails or is faulty, protect the drive motor of the drive mechanism configured to drive the blocking member 110 to move and the transmission system.

[0575] Specifically, the control module monitors an electrical signal (for example, a current or a voltage) of the drive motor of the blocking member through an electrical signal sensor (for example, a current sensor or a voltage sensor). When the electrical signal of the drive motor exceeds a signal threshold, the motor overload protection procedure is triggered, and the control module controls the drive motor driving the blocking member to move to be turned off (that is, cuts off the power of the motor), to stop the blocking member from continuing to move, thereby performing overload protection on the drive motor and the transmission system.

[0576] Further, referring to FIG. 25 to FIG. 28, the roller brush mechanism, especially the roller brush support 230, of the cleaning robot in this embodiment is configured to be floatable relative to the body 10.

[0577] For example, during cleaning of a carpet or another soft ground, because carpet pile or carpet fiber are soft, to adapt to the cleaning of the soft ground, the roller brush mechanism is configured to float relative to the body.

[0578] The foregoing floating is floating under non-active adjustment or non-active control, that is, passive floating.

[0579] To ensure sealing performance and improve a cleaning effect of a complex cleaning ground, especially a carpet or another soft ground, in some examples, the sealed adjustment mechanism 11, especially on the blocking member 110, is configured to float relative to the body.

[0580] The blocking member 110 is disposed to be floatable relative to the body 10, to adapt to different to-be-cleaned surfaces. This avoids changes in a height of the blocking member from a ground due to an uneven to-be-cleaned surface, and keeps the sealing performance from being affected, which help...

Claims

1. A cleaning robot comprising:a body having a front end;a movement assembly, disposed on the body and configured to support and drive the cleaning robot to move on an environmental surface of a to-be-cleaned region;a controller configured to control the cleaning robot to automatically perform cleaning work on the environmental surface; anda dust suction assembly, disposed on the body and configured to perform cleaning work on the environmental surface,wherein:the dust suction assembly comprises a roller brush assembly, a cavity configured to accommodate the roller brush assembly, a first blocking member located on a front side of the roller brush assembly, and a second blocking member located on a rear side of the roller brush assembly;the roller brush assembly comprises a first roller brush and a second roller brush, the first roller brush and the second roller brush are longitudinally arranged, and the first roller brush is close to the front end of the body;each of the first blocking member and the second blocking member has a free end close to the environmental surface; andwhen the cleaning robot is located on a rigid ground, a minimum distance between the free end of the first blocking member and the rigid ground is a first distance, and a minimum distance between the free end of the second blocking member and the rigid ground is a second distance, wherein the first distance is less than 5 mm, the second distance is less than 5 mm.

2. The cleaning robot according to claim 1, wherein a height difference between the first distance and the second distance is within 3 mm, so that when the first roller brush and the second roller brush rotate toward each other in opposite directions, a first air flow flows from an outside of the cavity, under the first blocking member, through a bottom of the first roller brush, and toward a space between the first roller brush and the second roller brush, and a second air flow flows from the outside of the cavity, under the second blocking member, through a bottom of the second roller brush, and toward the space between the first roller brush and the second roller brush.

3. The cleaning robot according to claim 1, wherein:a first opening portion formed by the free end of the first blocking member and the rigid ground has a first area;a second opening portion formed by the free end of the second blocking member and the rigid ground has a second area; anda ratio of the first area to the second area ranges from 0.7 to 1.3, so that when the first roller brush and the second roller brush rotate toward each other in opposite directions, a first air flow flows from an outside of the cavity, under the first blocking member, through a bottom of the first roller brush, and toward a space between the first roller brush and the second roller brush, and a second air flow flows from the outside of the cavity, under the second blocking member, through a bottom of the second roller brush, and toward the space between the first roller brush and the second roller brush.

4. The cleaning robot according to claim 1, wherein:in the first blocking member, a sealing area accounts for over 70%, and in the second blocking member, a sealing area accounts for over 70%; oran area of an air leakage hole of at least one blocking member in the first blocking member and the second blocking member accounts for 30% or below of an area of a corresponding blocking member, so that when the first roller brush and the second roller brush rotate toward each other in opposite directions, a first air flow flows from an outside of the cavity, under the first blocking member, through a bottom of the first roller brush, and toward a space between the first roller brush and the second roller brush, and a second air flow flows from the outside of the cavity, under the second blocking member, through a bottom of the second roller brush, and toward the space between the first roller brush and the second roller brush.

5. The cleaning robot according to claim 1, wherein:a first opening portion formed by the free end of the first blocking member and the rigid ground has a first area;a second opening portion formed by the free end of the second blocking member and the rigid ground has a second area; anda difference value between the first area and the second area is greater than or equal to 0 and less than 1100 mm2; or a sum value of the first area and the second area is greater than or equal to 0 and less than 2200 mm2, so that when the first roller brush and the second roller brush rotate toward each other in opposite directions, a first air flow flows from an outside of the cavity, under the first blocking member, through a bottom of the first roller brush, and toward a space between the first roller brush and the second roller brush, and a second air flow flows from the outside of the cavity, under the second blocking member, through a bottom of the second roller brush, and toward the space between the first roller brush and the second roller brush.

6. The cleaning robot according to claim 1, further comprising a dust suction fan, configured to generate a negative pressure,wherein when the cleaning robot is located on a carpet and the free end of the first blocking member and the free end of the second blocking member are in contact with the carpet, a flow rate of an air flow flowing through an inside of the carpet accounts for 70% or above of a flow rate of an air flow flowing out from a dust inlet of the cavity.

7. The cleaning robot according to claim 1, wherein the first distance is greater than or equal to the second distance, and a difference value between the first distance and the second distance is within 2 mm.

8. The cleaning robot according to claim 1, wherein:a minimum distance between the free end of the first blocking member and a lowest position point of the first roller brush is a third distance, the third distance is less than 15 mm, and a first air flow is guided to a bottom of the first roller brush; anda minimum distance between the free end of the second blocking member and a lowest position point of the second roller brush is a fourth distance, the fourth distance is less than 15 mm, and a second air flow is guided to a bottom of the second roller brush.

9. The cleaning robot according to claim 1, wherein a length of a connecting line between the free end of the first blocking member and a lowest position point of the first roller brush is less than a distance between the lowest position point of the first roller brush and a lowest position point of the second roller brush.

10. The cleaning robot according to claim 9, wherein:a first horizontal distance exists between the free end of the first blocking member and an outer contour of the first roller brush, and the first horizontal distance is less than or equal to 5 mm; and a second horizontal distance exists between the free end of the second blocking member and the second roller brush, and the second horizontal distance is less than or equal to 5 mm; ora minimum distance between the free end of the first blocking member and an outer contour of the first roller brush is less than or equal to 4 mm; and a minimum distance between the free end of the second blocking member and an outer contour of the second roller brush is less than or equal to 4 mm.

11. The cleaning robot according to claim 1, wherein:the cavity has a dust inlet in communication with a dust suction fan; andthe first roller brush rotates in a first direction while the second roller brush rotates in a second, opposite and facing direction, so that a first horizontal distance between the free end of the first blocking member and the first roller brush forms a first inlet through which air is hindered from flowing toward the dust inlet; and a second horizontal distance between the free end of the second blocking member and the second roller brush forms a second inlet through which air is hindered from flowing toward the dust inlet.

12. The cleaning robot according to claim 1, wherein hardnesses of materials of the first blocking member and the second blocking member are both greater than or equal to 80 HA.

13. The cleaning robot according to claim 7, wherein:the first blocking member is movable to adjust a distance between the free end of the first blocking member and the rigid ground, providing the first blocking member with a closed state and an open state;when the first blocking member is in the closed state, the first distance exists between the free end of the first blocking member and the rigid ground; andwhen the first blocking member is in the open state, the distance between the free end of the first blocking member and the rigid ground is greater than the first distance.

14. The cleaning robot according to claim 13, wherein:the dust suction assembly comprises a housing, the housing comprises a first roller brush support portion at least partially covering the first roller brush, and the first blocking member is movably disposed on the first roller brush support portion, to block the first roller brush; andthe housing further comprises a second roller brush support portion at least partially covering the second roller brush, and the second blocking member is a part of the second roller brush support portion, to block the second roller brush; and the first roller brush support portion and the second roller brush support portion surround to form the cavity configured to accommodate the roller brush assembly.

15. The cleaning robot according to claim 14, wherein:when the first blocking member is in the open state, a difference value between a first air flow and a second air flow is Δ1; and when the first blocking member is in the closed state, and the difference value between the first air flow and the second air flow is Δ2, wherein Δ2 is less than Δ1; orwhen the first blocking member is in the closed state, an air flow at a beating region in which the first roller brush beats the environmental surface has a first flow speed; and when the first blocking member is in the open state, the air flow at the beating region has a second flow speed, wherein the first flow speed is greater than the second flow speed.

16. The cleaning robot according to claim 14, wherein when the first blocking member is in the closed state, a dust inlet of the cavity has a first degree of vacuum, and when the first blocking member is in the open state, the dust inlet of the cavity has a second degree of vacuum, wherein the first degree of vacuum is greater than the second degree of vacuum.

17. The cleaning robot according to claim 1, wherein:the dust suction assembly comprises a housing;the housing comprises a roller brush support configured to at least partially cover and support the roller brush assembly, and the roller brush support is configured to be vertically floatable relative to a horizontal plane;the roller brush assembly is disposed on the roller brush support, and the roller brush assembly floats as a roller brushes support floats; andthe first blocking member is disposed on the roller brush support, to enable the first blocking member to float as the roller brushes support floats.

18. The cleaning robot according to claim 1, wherein the cleaning robot comprises a fan, and a power of the fan is greater than or equal to 60 W.

19. A cleaning robot comprising:a body having a front end;a movement assembly disposed on the body and configured to support and drive the cleaning robot to move on an environmental surface of a to-be-cleaned region;a controller configured to control the cleaning robot to automatically perform cleaning work on the environmental surface; anda dust suction assembly disposed on the body and configured to perform cleaning work on the environmental surface,wherein:the dust suction assembly comprises a roller brush assembly, a cavity configured to accommodate the roller brush assembly, a first blocking member located on a front side of the roller brush assembly, and a second blocking member located on a rear side of the roller brush assembly;the roller brush assembly comprises a first roller brush and a second roller brush, the first roller brush and the second roller brush are longitudinally arranged, and the first roller brush is close to the front end of the body;each of the first blocking member and the second blocking member has a free end close to the environmental surface; andwhen the cleaning robot is located on a carpet and a pile length of the carpet is greater than a preset length, the free end of the first blocking member and the free end of the second blocking member are in contact with the carpet, to enable a first air flow to flow from an outside of the cavity to a dust inlet of the cavity through an inside of the carpet and a second air flow to flow from the outside of the cavity to the dust inlet through the inside of the carpet, wherein a ratio of the first air flow to the second air flow is ranges from 0.7 to 1.3, inclusive.

20. A cleaning system comprising:a base station configured to park a cleaning robot, the base station including a dust collection fan configured to perform a dust collection maintenance operation; andthe cleaning robot including:a dust collection box;a body having a front end;a movement assembly disposed on the body and configured to support and drive the cleaning robot to move on an environmental surface of a to-be-cleaned region;a controller configured to control the cleaning robot to automatically perform cleaning work on the environmental surface; anda dust suction assembly, disposed on the body and configured to perform cleaning work on the environmental surface,wherein:the dust suction assembly comprises a roller brush assembly, a cavity configured to accommodate the roller brush assembly, a first blocking member located on a front side of the roller brush assembly, and a second blocking member located on a rear side of the roller brush assembly;the roller brush assembly comprises a first roller brush and a second roller brush, the first roller brush and the second roller brush are longitudinally arranged, and the first roller brush is close to the front end of the body;each of the first blocking member and the second blocking member has a free end close to the environmental surface;when the cleaning robot is located on a rigid ground, a minimum distance between the free end of the first blocking member and the rigid ground is a first distance, and a minimum distance between the free end of the second blocking member and the rigid ground is a second distance, wherein the first distance is less than 5 mm, the second distance is less than 5 mm; andwhen the base station performs a dust collection maintenance on the dust collection box, at least one of the first blocking member and the second blocking member is in an open state.

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