Dust box assembly and sweeping robot

Abstract

The utility model discloses a dust box assembly and a sweeping robot, the dust box assembly comprises a dust box shell, a separation assembly and a filtering assembly, a dust box cavity is formed in the dust box shell, and the dust box shell is provided with a first opening and a second opening which are communicated with the dust box cavity; the separation assembly is arranged in the dust box cavity and comprises a first separation part and a second separation part, the first separation part communicates with the first opening, the second separation part is located in the first separation part and connected with the inner wall of the first separation part, and the first separation part, the second separation part and the dust box shell define an annular cavity; an air outlet cavity is formed in the second separation part, the annular cavity is communicated with the air outlet cavity in a filtering manner, and the air outlet cavity is communicated with the second opening; the filtering assembly is arranged on the dust box shell and located at the second opening. According to the dust box assembly, the cleaning period of the filtering assembly is prolonged, and the user experience is improved; self suction force is maintained; and the space utilization rate is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, in particular to a dust box assembly and a sweeping robot. BACKGROUND

[0002] The sweeping robot is used to automatically complete floor cleaning work. When the sweeping robot is used with a base station, the base station cannot automatically clean the mixture of hair and fibers on the filter assembly in the dust box, and the user needs to manually remove the dust box and clean it. In addition, due to the straight-through nature of the air duct, the filter screen, the filter cotton and other filter assemblies are easily blocked by small dust, the suction force of the sweeping robot decreases, and the filter assembly needs to be cleaned frequently by hand, which affects the user experience. CONTENT OF THE UTILITY MODEL

[0003] The present application provides a dust box assembly and a sweeping robot to solve the technical problem that the suction force of the sweeping robot decreases due to the mixture of hair and fibers on the filter, and the filter assembly needs to be cleaned frequently by hand, which affects the user experience.

[0004] To solve the above technical problem, the present application provides a dust box assembly, comprising: a dust box shell forming a dust box cavity, the dust box shell being provided with a first opening and a second opening communicating with the dust box cavity; a separation assembly arranged in the dust box cavity, the separation assembly comprising a first separation part and a second separation part, the first separation part communicating with the first opening, the second separation part being located in the first separation part and connected with the inner wall of the first separation part, the first separation part, the second separation part and the dust box shell surrounding to form an annular cavity, the second separation part forming an air outlet cavity, the annular cavity and the air outlet cavity being in filtering communication, the air outlet cavity communicating with the second opening; and a filter assembly arranged in the dust box shell and located at the second opening.

[0005] The bottom of the first separation part communicates with the first opening, the second separation part is provided with a filter hole, and the annular cavity communicates with the air outlet cavity through the filter hole.

[0006] The separation assembly comprises a first extension part, the first extension part is arranged at the outer periphery of the first separation part, the dust box shell, the first extension part and the first separation part surround to form a dust storage space and an air outlet space, the upper part of the annular cavity communicates with the dust storage space, and the air outlet space communicates with the second opening. The first separation part, the second separation part and the first extension part are fixedly connected or integrally formed, and at least one of the first separation part, the second separation part and the first extension part is detachable in the dust box shell.

[0007] The dust box shell comprises a dust box body and a dust box cover plate, the dust box cover plate covers the opening of the dust box body, the dust box body and the dust box cover plate surround to form a dust box cavity, the bottom surface of the dust box body and / or the side of the dust box cover plate facing the dust box cavity is provided with a clamping part, and at least one of the first separation part, the second separation part and the first extension part is clamped in the clamping part.

[0008] The dust box shell is provided with a third opening, the third opening is in communication with the dust storage space, and the dust box assembly comprises a dust collection blocking part.

[0009] The separation assembly further comprises an air inlet part in communication with the second opening, the air inlet part comprises oppositely arranged first and second ends, the first end is connected to the first opening, and the second end is in communication with the annular cavity.

[0010] The second end of the air inlet part at least partially extends into the annular cavity, and / or at least one of the left and right sides of the air inlet part is arc-shaped.

[0011] The second separation part is provided with an air outlet part at the bottom, the air outlet part is in communication with the air outlet space, the air outlet part and the air inlet part are arranged opposite to each other at the outer periphery of the first separation part, the dust storage space is larger than the air outlet space, and / or the dust box shell is square.

[0012] The separation assembly further comprises a second extension part arranged at the outer periphery of the first separation part, the second extension part, the first extension part and the dust box shell form an air outlet space.

[0013] To solve the above technical problems, the application provides a sweeping robot comprising the dust box assembly.

[0014] The dust box assembly comprises a dust box shell, a separation assembly and a filter assembly. The dust box shell forms a dust box cavity. The dust box shell is provided with a first opening and a second opening in communication with the dust box cavity. The separation assembly is arranged in the dust box cavity. The separation assembly comprises a first separation part and a second separation part. The first separation part is in communication with the first opening. The second separation part is located in the first separation part and connected with the inner wall of the first separation part. The first separation part, the second separation part and the dust box shell surround to form an annular cavity. The second separation part forms an air outlet cavity. The annular cavity and the air outlet cavity are in filter communication. The air outlet cavity is in communication with the second opening. The filter assembly is arranged in the dust box shell and located at the second opening.

[0015] Therefore, by the cooperation of the dust box shell, the first opening, the second opening, the first separation part, the second separation part, the annular cavity and the air outlet cavity, the mixture of hair, lint and fiber directly enters the annular cavity, and cannot reach the surface of the filter assembly, which not only prolongs the cleaning cycle of the filter assembly and improves the user experience, but also maintains the suction force and reduces the resistance, thereby improving the cleaning efficiency. At the same time, compared with the prior art, the dust blocking sheet and the related structure at the first opening are not required in the embodiment, which reduces the cost. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0017] Figure 1 is an exploded schematic view of an embodiment of the dust box assembly of the present application;

[0018] Figure 2 is a first partial schematic view of an embodiment of the dust box assembly of the present application;

[0019] Figure 3 is a partial cross-sectional view of the separation assembly in the dust box assembly of the present application;

[0020] Figure 4 is a second partial schematic view of an embodiment of the dust box assembly of the present application;

[0021] Figure 5 is a first angle schematic view of the separation assembly in the dust box assembly of the present application;

[0022] Figure 6 is a second angle schematic view of the separation assembly in the dust box assembly of the present application;

[0023] Figure 7 is a top view of the separation assembly in the dust box assembly of the present application;

[0024] Figure 8 is a front view of an embodiment of the dust box assembly of the present application;

[0025] Figure 9 is a rear view of the separation assembly in the dust box assembly of the present application.

[0026] 10, dust box assembly; 11, dust box shell; 111, dust box main body; 1111, first opening; 1112, second opening; 1113, clamping portion; 112, dust box cover plate; 113, dust box cavity; 1131, dust storage space; 1132, air outlet space; 12, separation assembly; 121, first separation portion; 1211, dust throwing portion; 122, second separation portion; 1221, filter hole; 123, first extension portion; 124, annular cavity; 125, air outlet cavity; 126, air inlet portion; 126a, first end; 126b, second end; 127, air outlet portion; 128, second extension portion; 14, dust collection blocking portion. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0028] Reference to "an embodiment" in this document means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. Those skilled in the art will understand that the embodiments described herein can be combined with one another.

[0029] The dust box assembly and the sweeping robot provided by the present application will be described in detail below in combination with the embodiments.

[0030] Please refer to Figure 1 , Figure 2 and Figure 3 , Figure 1 is an exploded schematic view of an embodiment of the dust box assembly of the present application; Figure 2 is a first partial schematic view of an embodiment of the dust box assembly of the present application; Figure 3is a partial sectional view of a separating assembly in a dust box assembly of the present application. The present application provides a dust box assembly. The dust box assembly 10 is used to be installed in a robot vacuum cleaner (not shown in the figure). The robot vacuum cleaner can be used to automatically complete floor cleaning work, etc. The dust box assembly 10 comprises a dust box housing 11, a separating assembly 12 and a filtering assembly. The dust box housing 11 is formed with a dust box cavity 113. The dust box cavity 113 provides installation space for the separating assembly 12, etc. The dust box housing 11 is provided with a first opening 1111 and a second opening 1112. The first opening 1111 and the second opening 1112 are respectively communicated with the dust box cavity 113. The first opening 1111 is used to be communicated with a subsequent first separating part 121. The second opening 1112 is used to install the filtering assembly.

[0031] The separating assembly 12 is arranged in the dust box cavity 113. Among them, the separating assembly 12 can be detachably or fixedly connected in the dust box cavity 113. As in the present embodiment, the separating assembly 12 is detachably connected in the dust box cavity 113. The separating assembly 12 comprises a first separating part 121 and a second separating part 122. The first separating part 121 is communicated with the first opening 1111. Among them, the dust-containing airflow enters the separating assembly 12 through the first opening 1111 and the first separating part 121. The second separating part 122 is located in the first separating part 121; at the same time, the second separating part 122 is connected with the inner wall of the first separating part 121. Among them, the second separating part 122 and the inner wall of the first separating part 121 can be detachably connected or fixedly connected. As in the present embodiment, the second separating part 122 is integrally connected with the inner wall of the first separating part 121.

[0032] The first separating part 121, the second separating part 122 and the dust box housing 11 surround to form an annular cavity 124. Among them, the inner wall of the first separating part 121, the outer wall of the second separating part 122 and the top of the dust box housing 11 surround to form the above-mentioned annular cavity 124. The annular cavity 124 provides flow and movement space for the dust-containing airflow. For example, the dust with larger mass moves upward along the annular cavity 124 under the action of negative pressure. The annular cavity 124 can be used to store dust with larger mass. The second separating part 122 is formed with an air outlet cavity 125. The annular cavity 124 and the air outlet cavity 125 are filteredly communicated, which can play a certain filtering role on the dust-containing airflow, so that the dust with larger mass and the dust with smaller mass and the airflow are separated, wherein the dust with larger mass is located in the annular cavity 124, and the dust with smaller mass and the airflow enters the air outlet cavity 125. The air outlet cavity 125 is communicated with the second opening 1112. The dust with smaller mass and the airflow enter the second opening 1112 from the air outlet cavity 125.

[0033] The filter assembly is arranged in the dust box shell 11. The filter assembly is detachably arranged in the dust box shell 11, which facilitates the user to clean the filter assembly. The filter assembly is located at the second opening 1112. The filter assembly can filter small mass dust and the like at the second opening, so that clean air flow passes through the filter assembly into a dust removal fan (not shown in the figure) mentioned later and is discharged to the external environment. The filter assembly can be, but is not limited to, a Hepa assembly and the like.

[0034] Therefore, by the cooperation of the dust box shell 11, the first opening 1111, the second opening 1112, the first separation part 121, the second separation part 122, the annular cavity 124 and the air outlet cavity 125, the mixture of hair, lint and fiber directly enters the annular cavity 124 and cannot reach the surface of the filter assembly, which not only prolongs the cleaning cycle of the filter assembly and improves the user experience, but also maintains the suction force and reduces the resistance, thereby improving the cleaning efficiency. At the same time, compared with the prior art, the dust blocking piece (not shown in the figure) at the first opening 1111 and the related structure are not required in the embodiment, thereby reducing the cost and the like.

[0035] In some embodiments, the bottom of the first separation part 121 communicates with the first opening 1111. The dust-containing air flow enters the separation assembly 12 through the first opening 1111 and the bottom of the first separation part 121, so that the dust-containing air flow can move upward from the bottom and the like.

[0036] The second separation part 122 is provided with filter holes 1221. The annular cavity 124 communicates with the air outlet cavity 125 through the filter holes 1221. The number and size of the filter holes 1221 are not limited. The filter holes 1221 can have a certain filtering effect. For example, the filter holes 1221 can separate the dust with large mass and the dust with small mass and the air flow, that is, the filter holes 1221 can block the dust with large mass into the annular cavity 124, and the dust with large mass moves upward along the annular cavity 124; at the same time, the filter holes 1221 allow the dust with small mass and the air flow to pass through and enter the air outlet cavity 125.

[0037] In some embodiments, the separating assembly includes a first extension 123. The first extension 123 is arranged at the outer periphery of the first separating portion 121. The first extension 123 can be detachably or fixedly connected to the outer periphery of the first separating portion 121. In the present embodiment, the first extension 123 is integrally formed at the outer periphery of the first separating portion 121. The dust box housing 11, the first extension 123, and the first separating portion 121 together define different dust storage spaces 1131 and air outlet spaces 1132. The annular cavity 124 is in communication with the dust storage spaces 1131. That is, the larger dust and other debris in the annular cavity 124 are thrown into the dust storage spaces 1131 under the action of centrifugal force, so that the dust storage spaces 1131 can store larger dust. The air outlet cavity 125 is in communication with the air outlet spaces 1132. The air outlet spaces 1132 are in communication with the second opening 1112. That is, the smaller dust and air flow move to the second opening 1112 in sequence through the air outlet cavity 125 and the air outlet spaces 1132.

[0038] By arranging the first extension 123 in the separating assembly 12, the mixture of hair, lint, and fiber can directly enter the dust storage spaces 1131 and cannot reach the surface of the filter assembly. This not only prolongs the cleaning cycle of the filter assembly and improves the user experience, but also maintains the suction force and reduces the resistance, thereby improving the cleaning efficiency. In addition, the separating assembly 12 directly utilizes the space in the dust box cavity 113 to form the dust storage spaces 1131 and the air outlet spaces 1132, thereby improving the space utilization of the dust box assembly 10.

[0039] In some embodiments, the first separating portion 121, the second separating portion 122, and the first extension 123 are integrally formed. That is, the first separating portion 121, the second separating portion 122, and the first extension 123 are installed as a whole in the dust box cavity 113. At least one of the first separating portion 121, the second separating portion 122, and the first extension 123 can be detachable from the dust box housing 11. That is, one, two, or all of the first separating portion 121, the second separating portion 122, and the first extension 123 can be detachable from the dust box housing 11. For example, the first separating portion 121 can be detachable from the dust box housing 11; or the second separating portion 122 can be detachable from the dust box housing 11; or both the first separating portion 121 and the second separating portion 122 can be detachable from the dust box housing 11; or all of the first separating portion 121, the second separating portion 122, and the first extension 123 can be detachable from the dust box housing 11. The first separating portion 121, the second separating portion 122, and the first extension 123 can also have other combinations, which are not described here. By the above arrangement, the separating assembly 12 is easy to install and detach, thereby improving the installation efficiency. Moreover, no other structure needs to be arranged in the dust box cavity 113, which can adapt to the existing structure of the dust box housing 11 and improve the practicality.

[0040] In some other embodiments, the first separation part 121, the second separation part 122 and the first extension part 123 are fixedly connected. The fixed connection manner can be but is not limited to welding and the like. The first separation part 121, the second separation part 122 and the first extension part 123 are independent components, and the latter three are fixedly connected.

[0041] The detachable manner can be but is not limited to clamping, plug-in connection and bolt connection and the like. At least one of the first separation part 121, the second separation part 122 and the first extension part 123 is clamped in the dust box shell 11. In a specific embodiment, the dust box shell 11 includes a dust box body 111 and a dust box cover plate 112. The dust box cover plate 112 is arranged on the opening of the dust box body 111. The dust box body 111 and the dust box cover plate 112 are arranged to form the dust box cavity 113. The bottom surface of the dust box body 111 and / or the side of the dust box cover plate 112 facing the dust box cavity 113 is provided with a clamping part 1113. The bottom surface of the dust box body 111 is provided with the clamping part 1113. Alternatively, the side of the dust box cover plate 112 facing the dust box cavity 113 is provided with the clamping part 1113. Alternatively, the bottom surface of the dust box body 111 and the side of the dust box cover plate 112 facing the dust box cavity 113 are both provided with the clamping part 1113. At least one of the first separation part 121, the second separation part 122 and the first extension part 123 is clamped in the clamping part 1113, achieving clamping connection between at least one of the first separation part 121, the second separation part 122 and the first extension part 123 and the clamping part 1113, facilitating installation and disassembly of the separation assembly 12, and further improving installation efficiency.

[0042] In the present embodiment, the bottom surface of the dust box body 111 is provided with a clamping part 1113. The bottom of the second separation part 122 and the bottom of the first extension part 123 are clamped in the clamping part 1113. The extension direction of the clamping part 1113 can be consistent with the extension direction of the second separation part 122 and the first extension part 123. In addition, the side of the dust box cover plate 112 facing the dust box cavity 113 is provided with another clamping part 1113. The top of the first separation part 121 and the top of the first extension part 123 are clamped in the other clamping part 1113. The extension direction of the other clamping part 1113 can be consistent with the extension direction of the top of the first separation part 121 and the top of the first extension part 123. The clamping part 1113 can be detachably or fixedly connected to the bottom surface of the dust box body 111 and / or the side of the dust box cover plate 112 facing the dust box cavity 113. In the present embodiment, the clamping part 1113 is fixedly connected to the bottom surface of the dust box body 111 and the side of the dust box cover plate 112 facing the dust box cavity 113.

[0043] In actual implementation, the clamping portion 1113 is provided with a clamping groove (not shown in the figure). The clamping portion 1113 is provided with a sealing member (not shown in the figure). The sealing member is located at the clamping groove. When at least one of the first separation portion 121, the second separation portion 122 and the first extension portion 123 is clamped to the clamping portion 1113, the sealing member can play a sealing role, can reduce the outflow of dust and air flow, and the like, and further improve the sealing performance of the separation assembly 12 installed in the dust box cavity 113.

[0044] In some embodiments, the dust box shell 11 is provided with a third opening (not shown in the figure). The third opening is in communication with the dust storage space 1131 in the dust box cavity 113. The dust box assembly 10 comprises a dust collection blocking portion 14. The dust collection blocking portion 14 can open and close the third opening. When the dust collection blocking portion 14 opens or closes the third opening. The third opening is used to dock with the base station.

[0045] When the dust box assembly 10 performs dust removal work, the third opening is undocked with the base station, and the dust collection blocking portion 14 closes the third opening. When the dust box assembly 10 performs dust collection work, the dust collection blocking portion 14 opens the third opening. The third opening is docked with the base station, and the dust with large mass in the dust storage space 1131 is sucked into the base station, so as to realize dust collection of the dust box assembly 10.

[0046] The third opening and the dust storage space 1131 can be opened and closed, so that the dust with large mass stored in the dust storage space 1131 is more easily entered into the base station, the path is shortened, and the dust collection efficiency is improved. The dust collection blocking portion 14 can open or close the third opening by rotating or the like, and the convenience of opening or closing the third opening by the dust collection blocking portion 14 is improved.

[0047] Please refer to Figure 4 , Figure 5 and Figure 6 , Figure 4 is a second partial view of an embodiment of the dust box assembly of the present application; Figure 5 is a first angle view of a separation assembly in the dust box assembly of the present application; Figure 6 is a second angle view of a separation assembly in the dust box assembly of the present application. In combination with Figures 1 to 3In some embodiments, the separating assembly 12 further comprises an air inlet part 126. The air inlet part 126 is detachably or fixedly connected to the first separating part 121. In this embodiment, the air inlet part 126 is integrally connected to the first separating part 121. The air inlet part 126 comprises oppositely arranged first and second ends 126a and 126b. The first end 126a is connected to the first opening 1111. In this embodiment, the first end 126a is detachably or fixedly connected to the first opening 1111. For example, the first end 126a is inserted into the first opening 1111. The second end 126b is in communication with the annular cavity 124. That is, the dust-containing airflow enters the annular cavity 124 from the first end 126a and the second end 126b.

[0048] In the direction from the first end 126a to the second end 126b, the air inlet part 126 gradually decreases in cross-sectional area perpendicular to the direction from the first end 126a to the second end 126b. By arranging the air inlet part 126 in this way, not only is the cross-sectional area of the dust-containing airflow entering the air inlet part 126 increased, but also the speed of the dust-containing airflow entering the annular cavity 124 is increased. The cross-sectional shape of the air inlet part 126 perpendicular to the direction from the first end 126a to the second end 126b can be, but is not limited to, a rectangle or a trapezoid, etc.

[0049] In some embodiments, the second end 126b of the air inlet part 126 at least partially extends into the annular cavity 124. This not only increases the speed of the dust-containing airflow in the annular cavity 124, but also improves the stability of the installation of the air inlet part 126 in the first separating part 121.

[0050] In some embodiments, at least one of the left and right side surfaces of the air inlet part 126 is arc-shaped. For example, the left side surface of the air inlet part 126 is arc-shaped. Alternatively, the right side surface of the air inlet part 126 is arc-shaped. Alternatively, both the left and right side surfaces of the air inlet part 126 are arc-shaped. By arranging the left and right side surfaces of the air inlet part 126 in this way, the dust-containing airflow can be more smoothly guided into the air inlet part 126, thereby increasing the amount of dust-containing airflow entering the air inlet part 126. Furthermore, the dust-containing airflow can be reduced from directly impacting at least one of the two side surfaces of the air inlet part 126, thereby further reducing noise, etc., and thereby improving the user experience, etc.

[0051] Please refer to Figure 7 , Figure 8 and Figure 9 , Figure 7 is a top view of the separating assembly in the dust box assembly of the present application; Figure 8 is a front view of an embodiment of the dust box assembly of the present application; Figure 9 is a rear view of the separating assembly in the dust box assembly of the present application. In combination with Figures 1 to 6In some embodiments, the second separation part 122 is provided with an air outlet part 127 at the bottom. The air outlet part 127 is in communication with the air outlet space 1132. The air outlet part 127 and the air inlet part 126 are arranged at opposite positions of the outer periphery of the first separation part 121. The air outlet part 127 and the air inlet part 126 are arranged at different positions of the first separation part 121, which reduces the overlap of the air outlet part 127 and the air inlet part 126 in the vertical direction, and further reduces the height of the separation assembly 12, thereby further improving the space utilization of the dust box cavity 113 in the dust box assembly 10.

[0052] Please review Figures 1 to 3 In some embodiments, the dust storage space 1131 is larger than the air outlet space 1132. By arranging the dust storage space 1131 in this way, the area of the dust storage space 1131 is increased, and the dust storage capacity is increased. The shape of the dust storage space 1131 can be related to the shape of the first extension part 123, the dust box shell 11, and the shape of the first separation part 121, and the shape is not limited.

[0053] In some embodiments, the dust box shell 11 is arranged in a substantially square shape. For example, the dust box shell 11 can be square or substantially square. The first separation part 121 and the second separation part 122 of the separation assembly 12 are arranged at one end of the dust box shell 11. The first extension part 123 extends from one end of the dust box shell 11 to the other end and is arranged in an inclined manner. By arranging in this way, not only the space of the dust box cavity 113 is fully utilized to improve the space utilization, but also the size of the dust storage space 1131 is larger than the size of the air outlet space 1132.

[0054] Please review Figures 1 to 6 In some embodiments, the separation assembly 12 further comprises a second extension part 128. The second extension part 128 is arranged at the outer periphery of the first separation part 121. The second extension part 128 can be detachably or fixedly connected to the outer periphery of the first separation part 121. In this embodiment, the second extension part 128 is integrally formed with the outer periphery of the first separation part 121. The second extension part 128, the first extension part 123, and the dust box shell 11 form the air outlet space 1132. By arranging the second extension part 128, the sealing performance of the air outlet space 1132 can be ensured, and the outflow of dust-containing air flow can be reduced, thereby improving the sealing performance of the separation assembly 12.

[0055] The first separation part 121 is provided with a dust throwing part 1211 at the top. The dust with large mass in the annular cavity 124 enters the air outlet space 1132 through the dust throwing part 1211. The dust throwing part 1211 can be a notch at the top of the first separation part 121. The second separation part 122 is provided with the filter hole 1221 on the side wall. The size, shape, etc. of the filter hole 1221 can be determined according to actual needs, which are not limited herein. The second separation part 122 can be but is not limited to a cylindrical shape or a circular truncated cone shape. The material of the second separation part 122 can be but is not limited to plastic, nylon, metal, etc. For example, the second separation part 122 can be a plastic cylinder, a nylon cylinder, a metal cylinder, etc. The corresponding filter hole is provided on the plastic cylinder, the nylon cylinder, the metal cylinder, etc. Alternatively, the second separation part 122 can be a plastic circular truncated cone, a nylon circular truncated cone, a metal circular truncated cone, etc. The corresponding filter hole 1221 is provided on the plastic circular truncated cone, the nylon circular truncated cone, and the metal circular truncated cone, etc.

[0056] Please refer to Figures 1 to 9 The present application provides a sweeping robot. The sweeping robot (not shown in the figure) comprises a dust box assembly 10. The dust box assembly 10 is the dust box assembly 10 described in the above embodiments, which will not be repeated here. The sweeping robot uses the dust box assembly 10 described above, so that the mixture of hair, lint and fiber directly enters the annular cavity 124 and cannot reach the surface of the filter assembly. This not only prolongs the cleaning cycle of the filter assembly and improves the user experience, but also maintains the suction force and reduces the resistance, thereby improving the cleaning efficiency. At the same time, compared with the prior art, the dust baffle and the related structure at the first opening 1111 are not required in the present embodiment, thereby reducing the cost, etc.

[0057] In some embodiments, the sweeping robot comprises a dust box fan (not shown in the figure). The dust box fan is arranged at a position close to the second opening 1112 of the dust box assembly 10. The dust box fan provides suction force to form negative pressure in the dust box assembly 10.

[0058] The working principle of the sweeping robot is as follows. When the sweeping robot starts the dust removal work, the dust removal fan behind the filter assembly is turned on to form negative pressure. The dust-containing airflow enters the annular cavity 124 in the separation assembly 12 from the air inlet part 126 and performs circular motion upward under the action of the negative pressure. Under the action of the centrifugal force, the dust with large mass is thrown into the dust storage space 1131 through the dust throwing part 1211. A small amount of dust with small mass that cannot be separated enters the air outlet space 1132 together with the airflow through the filter hole 1221 and the air outlet cavity 125. A small amount of dust with small mass that cannot be separated enters the filter assembly together with the airflow, and the filter assembly filters out the small amount of dust with small mass that cannot be separated, while the clean airflow is discharged into the atmosphere after entering the dust removal fan.

[0059] When the sweeping robot starts the dust collection work, the dust-containing airflow no longer enters the first separation part 121, the second separation part 122 and the filter assembly. The third opening of the sweeping robot is docked with the base station, the dust collection blocking part 14 is opened, and the dust of large mass in the dust storage space 1131 is directly sucked into the base station by the base station fan, realizing the dust collection work of the sweeping robot and the like.

[0060] The terms "first", "second", "third" in the present application are only for descriptive purpose, and cannot be understood as indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", "third" can explicitly or implicitly include at least one of the features. All directional indications (such as upper, lower, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship between the components in a certain posture (as shown in the drawings), and if the posture changes, the directional indications also change accordingly. In addition, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units without limitation to the listed steps or units, but optionally further includes steps or units not listed or other steps or units inherent to such processes, methods, products or devices.

[0061] The above is only an embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A dust box assembly characterized by, The dust box assembly comprises: a dust box shell, which is formed with a dust box cavity, and is provided with a first opening and a second opening communicating with the dust box cavity; a separation assembly, which is arranged in the dust box cavity, and comprises a first separation part and a second separation part, the first separation part communicates with the first opening, the second separation part is located in the first separation part and is connected with the inner wall of the first separation part, the first separation part, the second separation part and the dust box shell surround to form an annular cavity, the second separation part is formed with an air outlet cavity, the annular cavity and the air outlet cavity are in filtering communication, and the air outlet cavity communicates with the second opening; a filter assembly, which is arranged in the dust box shell and located at the second opening.

2. The dust box assembly of claim 1, wherein, The bottom of the first separation part communicates with the first opening, the second separation part is provided with a filter hole, and the annular cavity communicates with the air outlet cavity through the filter hole.

3. The dust box assembly of claim 2, wherein, The separation assembly comprises a first extension part, which is arranged on the outer periphery of the first separation part, and the dust box shell, the first extension part and the first separation part surround to form an ash storage space and an air outlet space, the upper part of the annular cavity communicates with the ash storage space, and the air outlet space communicates with the second opening.

4. The dust box assembly of claim 3, wherein, The first separation part, the second separation part and the first extension part are fixedly connected or integrally formed, and at least one of the first separation part, the second separation part and the first extension part is detachable in the dust box shell.

5. The dust box assembly of claim 4, wherein, The dust box shell comprises a dust box body and a dust box cover plate, the dust box cover plate covers the opening of the dust box body, the dust box body and the dust box cover plate surround to form the dust box cavity, and the bottom surface of the dust box body and / or the side of the dust box cover plate facing the dust box cavity is provided with a clamping part, and at least one of the first separation part, the second separation part and the first extension part is clamped in the clamping part.

6. The dust box assembly of claim 3, wherein, The dust box shell is provided with a third opening, and the third opening communicates with the ash storage space; The dust box assembly comprises a dust collection blocking part, and the dust collection blocking part is openably and closably connected to the third opening, and the third opening is used for docking with a base station.

7. The dust box assembly of claim 3, wherein, The separation assembly further comprises an air inlet part, which communicates with the second opening, and the air inlet part comprises a first end and a second end arranged oppositely, the first end is connected to the first opening, and the second end communicates with the annular cavity; From the first end to the second end, the air inlet part gradually decreases in cross-sectional area perpendicular to the direction from the first end to the second end.

8. The dust box assembly of claim 7, wherein, The second end of the air inlet part at least partially extends into the annular cavity. And / or, at least one of the left and right sides of the air inlet part is arranged in an arc shape.

9. The dust box assembly of claim 7, wherein, The bottom of the second separation part is provided with an air outlet part, the air outlet part communicates with the air outlet space, and the air outlet part and the air inlet part are arranged oppositely on the outer periphery of the first separation part; And / or, the ash storage space is larger than the air outlet space; And / or, the dust box shell is arranged in an approximate square shape.

10. The dust box assembly of claim 3, wherein, The separation assembly further comprises a second extension part arranged at the outer periphery of the first separation part, the second extension part, the first extension part and the dust box housing forming the air outlet space.

11. A robot vacuum cleaner characterised in that, The dust box assembly comprises the separation assembly according to any one of claims 1 to 10.

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