Dust box, dust box assembly, and cleaning device

Abstract

The dust box, the dust box assembly and the cleaning device are disclosed. The dust box assembly comprises a dust box and at least two filter screen assemblies. The dust box is formed with a containing cavity, a dust suction port and an air outlet. The dust suction port is communicated with the containing cavity. The dust box is further provided with at least two communication holes which are arranged at intervals. The containing cavity is communicated with the air outlet through the at least two communication holes. The at least two communication holes are respectively provided with the filter screen assemblies to filter the airflow from the dust suction port, the containing cavity to the air outlet. In this way, the cleaning effect can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cleaning devices, in particular to a dust box, a dust box assembly and a cleaning device. BACKGROUND

[0002] With the improvement of people's living standards and the rapid development of intelligent device technology, intelligent cleaning devices such as sweeping robots, dust collectors, vacuum cleaners and the like are widely welcomed in both work and life, and with the advent of Internet of Things technology, everything is interconnected, and the market of intelligent cleaning devices will be wider.

[0003] The cleaning efficiency and cleaning effect of the current intelligent cleaning device need to be improved. SUMMARY

[0004] The technical problem solved by the present application is to provide a dust box, a dust box assembly and a cleaning device, which can effectively improve the cleaning effect.

[0005] To solve the above technical problems, one technical solution adopted by the present application is to provide a dust box assembly comprising a dust box and at least two filter screen assemblies, the dust box being formed with a containing cavity, a dust suction port and an air outlet, the dust suction port being in communication with the containing cavity. The dust box is further provided with at least two communication holes arranged at intervals, and the containing cavity is in communication with the air outlet through the at least two communication holes. The at least two communication holes are respectively provided with filter screen assemblies to filter the airflow from the dust suction port, the containing cavity to the air outlet.

[0006] To solve the above technical problems, another technical solution adopted by the present application is to provide a dust box, the dust box being formed with a containing cavity, a dust suction port and an air outlet, the dust suction port being in communication with the containing cavity. The dust box is further provided with at least two communication holes arranged at intervals, and the containing cavity is in communication with the air outlet through the at least two communication holes.

[0007] To solve the above technical problems, another technical solution adopted by the present application is to provide a cleaning device comprising the above-mentioned dust box assembly and a fan.

[0008] Compared with the prior art, the present application has the beneficial effects that by providing at least two communication holes to communicate the containing cavity and the air outlet, each communication hole can be provided with a filter screen assembly, and when the airflow is formed, at least two air ducts can be formed inside the dust box, the airflow direction can be effectively improved, the multiple airflows of the at least two air ducts can work synergistically, rapid filtration can be achieved, the filtration effect of the dust box can be improved, the rapid settlement of garbage objects can be facilitated, the space utilization rate of the dust box can be improved, and thus the cleaning effect can be effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 is a structural schematic view of an embodiment of the dust box assembly of the present application;

[0010] Figure 2 is a partial exploded view of a structure of a dust box assembly embodiment of the present application;

[0011] Figure 3 is a cross-sectional view of the A-A section of a structure of a dust box assembly embodiment of the present application;

[0012] Figure 4 is another partial exploded view of a structure of a dust box assembly embodiment of the present application;

[0013] Figure 5 is a partial exploded view of another structure of a dust box assembly embodiment of the present application;

[0014] Figure 6 is a partial structure view of another structure of a dust box assembly embodiment of the present application;

[0015] Figure 7 is a partial exploded view of yet another structure of a dust box assembly embodiment of the present application;

[0016] Figure 8 is another partial exploded view of yet another structure of a dust box assembly embodiment of the present application;

[0017] Figure 9 is a partial structure view of yet another structure of a dust box assembly embodiment of the present application;

[0018] Figure 10 is a position view of a communication hole in yet another structure of a dust box assembly embodiment of the present application;

[0019] Figure 11 is another position view of a communication hole in yet another structure of a dust box assembly embodiment of the present application;

[0020] Figure 12 is a structure view of a connecting piece of a dust box assembly embodiment of the present application;

[0021] Figure 13 is another structure view of a connecting piece of a dust box assembly embodiment of the present application;

[0022] Figure 14 is a structure view of a cleaning device embodiment of the present application. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to 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 other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0024] The inventor has found through long-term research that a cleaning device such as a dust collector or a sweeping robot relies on negative pressure to suck up sundries, garbage, dust, and the like. The structural design of the dust collector or the sweeping robot requires as little volume as possible to facilitate operation or more flexible work, and thus it is difficult to make the volume of the dust box very large. If the structural design of the dust box is not reasonable, the garbage and the like may be clogged in one place when being sucked into the dust box, and thus the space utilization of the dust box is low. To improve the above technical problems, the inventor of the present application has made long-term research and test and proposes the following embodiments.

[0025] Referring to Figure 1 , the dust box assembly 1 described in the dust box assembly embodiments of the present application can include a dust box 10, a fan 21, and the like.

[0026] Referring to Figure 2 , the dust box 10 can be used to contain sundries, dust, and the like garbage objects that are sucked up. The dust box 10 has a containing cavity 100, and specifically can contain the sundries, dust, and the like garbage objects that are sucked up by the containing cavity 100. The dust box 10 also has a dust suction port 110 that communicates with the containing cavity 100. The garbage objects enter the containing cavity 100 from the dust suction port 110. The dust box 10 can also have at least one air outlet 120. For example, the dust box 10 can also have at least two air outlets 120, and the at least two air outlets 120 are both communicated to the containing cavity 100. After the garbage objects enter the containing cavity 100 with the air through the dust suction port 110, the air flows out through the air outlet 120. In this way, the dust suction port 110, the containing cavity 100, and the air outlet 120 become a channel for the airflow to pass through under the action of the fan 21.

[0027] The number of the fan 21 is at least one, corresponding to at least one air outlet 120. That is, at least two fans 21 correspond to at least two air outlets 120, and the fan 21 and the air outlet 120 can be one-to-one correspondence. The fan 21 is mainly used to extract air through the air outlet 120, and form an airflow on the dust suction port 110 to the air outlet 120. The position and specific structure of the fan 21 and the air outlet 120 are not limited to Figure 1 and Figure 2 the examples presented.

[0028] As Figure 1 and Figure 2As shown, in order to better match the fan 21 and the air outlet 120, facilitate the connection and adaptation of the structure of the dust box 10 and the like, the dust box assembly 1 can further comprise a connecting piece 22. The fan 21 can be connected with the connecting piece 22 and can communicate with the air outlet 120 through the connecting piece 22. The fan 21 communicates with the air outlet 120 through the connecting piece 22, that is, can extract the air in the containing cavity 100 from the air outlet 120 through the connecting piece 22. One connecting piece 22 and one fan 21 can serve as a set of suction assembly 20. The dust box assembly 1 of the embodiment can be provided with multiple air outlets 120, and multiple sets of suction assemblies 20 are correspondingly provided.

[0029] By providing at least two fans 21 corresponding to at least two air outlets 120, each fan 21 communicating with an air outlet 120, the at least two fans 21 can form at least two air ducts inside the dust box 10 when working, so that at least two air flows can work synergistically, which can quickly increase the suction of air, thereby quickly removing the air in the containing cavity 100, so that the suction port 110 can generate greater suction to suck in garbage objects. Moreover, compared with the design of a single fan 21 and a single air duct, the embodiment can suck larger particles and heavier garbage objects, and can effectively improve the cleaning effect.

[0030] Further, the connecting piece 22 is provided to cooperate with the fan 21 to communicate with the air outlet 120, which can facilitate the installation of the fan 21 and the structural arrangement and design of the entire assembly, and the connecting piece 22 can also prolong the air duct, which can accelerate the air flow speed and further improve the suction of the suction port 110 and the cleaning effect.

[0031] Referring to Figure 2 and Figure 3 , the dust box 10 can further form a passage cavity 101. The passage cavity 101 is arranged adjacent to the containing cavity 100 in the thickness direction of the dust box 10, and the passage cavity 101 communicates with the containing cavity 100. The passage cavity 101 communicates with the air outlet 120. Under the suction of the fan 21, the passage cavity 101 is located downstream of the air flow compared with the containing cavity 100. That is, when the fan 21 works, the air flow enters the containing cavity 100 from the suction port 110, then enters the passage cavity 101 from the containing cavity 100, and finally is discharged through the connecting piece 22 and the fan 21. The passage cavity 101 is located downstream of the containing cavity 100 in the air flow direction.

[0032] By setting the passage cavity 101 to communicate with the air outlet 120, the flowable space in the dust box 10 is increased. Further, it is conducive to the arrangement and design of multiple air outlets 120, and thus conducive to the setting of multiple fans 21 and connecting pieces 22, and thus multiple air ducts are formed, and the fan 21 does not directly suck air in the containing cavity 100, but sucks air through the passage cavity 101, which is more conducive to the deposition of garbage in the containing cavity 100, and further improves the air suction and cleaning effect.

[0033] As shown in Figure 2 and Figure 3 for example, when the number of air outlets 120 is two, the two air outlets 120 can form two sides opposite to the dust box 10, respectively. For example, the arrangement direction of the two air outlets 120 is perpendicular to the thickness direction of the dust box 10, and can be generally consistent with the length direction of the suction port 110. The suction port 110 is arranged at intervals with the two air outlets 120, and is located between the two air outlets 120 and does not locate on the same side with the two air outlets 120. The suction port 110 is formed on the side of the dust box 10 around the thickness direction, that is, the connecting line of the suction port 110 and the two air outlets 120 is around the thickness direction of the dust box 10.

[0034] By setting the two air outlets 120 on the two sides opposite to the dust box 10, and the suction port 110 between the two air outlets 120, the air duct formed inside the dust box 10 can be more balanced, which ensures that the two fans 21 can effectively cooperate with each other, and also reduces the noise generated by the airflow.

[0035] Referring to Figure 4 , the first exemplary structure of the dust box 10 can be further described as follows:

[0036] The dust box 10 can include a first shell 11, a second shell 12, and a cover 13. One side of the second shell 12 is covered on the first shell 11 to form a containing cavity 100. The other side of the second shell 12 is formed with a groove 1210, and the cover 13 is covered on the other side of the second shell 12 to form a passage cavity 101. That is, the thickness direction of the dust box 10 can be the direction from the first shell 11 to the cover 13 and the opposite direction. The containing cavity 100 and the passage cavity 101 can be spaced apart by the second shell 12, thereby being arranged adjacent to each other.

[0037] The first shell 11 can be provided in a groove type, for example, can include a bottom wall 111 and a side wall 112 surrounding the bottom wall 111, and the bottom wall 111 and the side wall 112 form a groove structure. When the second shell 12 is covered on the first shell 11, the groove structure is covered to form the accommodating cavity 100. The dust suction port 110 can be provided on the side wall 112 of the first shell 11. The dust box 10 can further include a dust suction part 14 communicating with the dust suction port 110 of the first shell 11, and a side of the dust suction part 14 away from the dust suction port 110 is provided in an inclined manner. For example, an angle between a plane where the side of the dust suction part 14 away from the dust suction port 110 is located and a plane where the dust suction port 110 is located is greater than 0° and less than 90°, for example, 45°. Of course, the dust suction port 110 can also be provided on the second shell 12, and the first shell 11 and the second shell 12 can also each provide a part of the dust suction port 110 to jointly form the dust suction port 110 when they are covered on each other.

[0038] As shown in Figure 4 , the second shell 12 includes a top wall 121 and an extension 122. The extension 122 is connected to an edge region of the top wall 121, and can extend toward a side of the top wall 121 facing the first shell 11. Optionally, the second shell 12 can include two extensions 122, which are oppositely arranged. When the second shell 12 is covered on the first shell 11 for assembly, the top wall 121 is covered on the side wall 112 of the first shell 11, the extension 122 is oppositely arranged with the side wall 112 of the first shell 11, and a part of the side wall 112 of the first shell 11 is clamped between the two extensions 122.

[0039] Specifically, one side of the top wall 121 is covered on the side wall 112 of the first shell 11, so that the second shell 12 and the first shell 11 cooperatively form the accommodating cavity 100. As shown in Figure 4 , the other side of the top wall 121 forms a groove 1210. Each extension 122 has a space communicating with the groove 1210, and a side of the extension 122 away from the top wall 121 can form an air outlet 120, and the air outlet 120 communicates with the space. The cover 13 is covered on the other side of the top wall 121, so that the cover 13 and the second shell 12 cooperatively form the channel cavity 101, and the air outlet 120 communicates with the channel cavity 101. Of course, the air outlet 120 can also be provided on the first shell 11, or simultaneously provided on the first shell 11 and the second shell 12.

[0040] Optionally, the first shell 11 and the second shell 12 can be connected by means of fitting, for example, a fitting groove (not labeled) is arranged on the periphery of one side of the top wall 121, and a fitting edge (not labeled) is arranged on the periphery of the side wall 112 of the first shell 11. When the first shell 11 and the second shell 12 are closed, the fitting edge is fitted into the fitting groove to be connected, so that the connection of the two is more compact, and the sealing effect is achieved. Of course, a sealing member can be further arranged in the fitting groove to further enhance the sealing effect. In the embodiment, the second shell 12 and the cover 13 can also be connected by means of fitting, for example, by means of the cooperation of the fitting groove and the fitting edge.

[0041] As shown in Figure 4 The second shell 12 can be provided with a communication hole 1211, which penetrates one side of the second shell 12 to the other side of the second shell 12. Specifically, the communication hole 1211 can be arranged on the top wall 121 and penetrate the top wall 121, so as to communicate the passage cavity 101 and the containing cavity 100.

[0042] The dust box assembly 1 of the embodiment can include a filter screen assembly, which includes a first filter screen 15 and a second filter screen 16. The filtering accuracy of the second filter screen 16 is less than that of the first filter screen 15. In other words, the second filter screen 16 can be a coarse filter screen (primary efficiency filter screen), and the first filter screen 15 can be a fine filter screen (high efficiency filter screen). For example, if the first filter screen 15 and the second filter screen 16 are both mesh-shaped, the mesh size of the second filter screen 16 can be larger than that of the first filter screen 15. For example, the second filter screen 16 can have 4 meshes, and the first filter screen 15 can have 100 meshes. The overall size of the second filter screen 16 and the overall size of the first filter screen 15 are both comparable to the size of the communication hole 1211, so that the size of the mesh of the second filter screen 16 is larger than that of the mesh of the first filter screen 15. Of course, as shown in Figure 2 and Figure 3 The first filter screen 15 can be a folded filter screen, and the filter core of the first filter screen 15 is, for example, a continuous Z-shaped folded shape.

[0043] The second filter screen 16 and the first filter screen 15 can be arranged in the second shell 12 and cover the communication hole 1211 in sequence. Specifically, the second shell 12 is provided with a "cross" shaped bracket in the communication hole 1211, and of course, other shapes (such as Figure 4(As shown, not labeled), the bracket can be used to support the second filter 16 and the first filter 15, so that both are more stably placed on the second housing 12. Under the suction action of the fan 21, garbage, debris and other objects enter the accommodating chamber 100 through the dust suction port 110 along with the airflow. Due to the dual filtering effect of the second filter 16 and the first filter 15, the airflow is filtered by the second filter 16 and the first filter 15 in turn, and dust, debris and other objects are left in the accommodating chamber 100. The filtered air enters the channel cavity 101 and is extracted through the air outlet 120.

[0044] The modular design of the first shell 11, the second shell 12, and the cover 13 improves the structural stability of the dust box 10 and facilitates assembly and disassembly, facilitating the cleaning of waste and maintenance of the dust box 10. Furthermore, the modular structure of the dust box 10 facilitates the cooperation of the first shell 11 and the second shell 12 to form the accommodating chamber 100, while the cooperation of the second shell 12 and the cover 13 to form the channel chamber 101. This allows the accommodating chamber 100 to better accommodate debris, waste, and other objects, while allowing the channel chamber 101 to more quickly exhaust air from the accommodating chamber 100, thereby increasing the airflow rate.

[0045] Furthermore, a multi-stage filtration system is provided, and the second filter 16 and the first filter 15 can perform multiple filtrations on the airflow, ensuring that debris, dust, and other garbage objects can be effectively filtered and stored in the accommodating cavity 100, achieving a good cleaning effect. Of course, the number of connecting holes 1211 can also be multiple, and an example will be given later in this embodiment.

[0046] like Figure 3 As shown, the cover 13 is used to cover the second shell 12 and cooperate with the second shell 12 to form a channel cavity 101. In this embodiment, the cover 13 and the second shell 12 can be connected by a sealing member ( Figure 4 Shown, but not labeled) for sealing fit. Figure 4 As shown, the cover 13 may include a cover body 131 and a filter cover 132. A mounting hole 130 is formed in the cover body 131 at a position corresponding to the first filter 15. The mounting hole 130 communicates with the channel cavity 101. When the cover body 131 is positioned over the sidewall 112 of the first housing 11, the first and second filters 15, 16 are exposed. Optionally, the filter cover 132 is rotatably connected to the cover body 131. For example, one side of the filter cover 132 may be rotatably attached to the inner wall of the cover body 131, which defines the mounting hole 130, via a rotating shaft. The filter cover 132 can be rotated to cover or open the mounting hole 130, exposing the first and second filters 15, 16. Optionally, the size of the mounting hole 130 is greater than or equal to the size of the connecting hole 1211. Of course, in other embodiments, the size of the mounting hole 130 may also be smaller than the size of the connecting hole 1211.

[0047] Further, the filter screen upper cover 132 can be matched with the mounting hole 130 through a sealing member (such as a gasket) which is shaped to be suitable for the mounting hole 130 (not shown but labeled) to improve the sealing effect of the dust box 10 and ensure the suction force of the suction port 110 and the effective flow of the airflow inside the dust box 10. Figure 4

[0048] By setting the rotatable filter screen upper cover 132 to be matched with the mounting hole 130, the second filter screen 16 and the first filter screen 15 can be conveniently disassembled or cleaned, and the setting of the mounting hole 130 can also facilitate the observation of the inside of the dust box 10 and the inspection and repair.

[0049] For the first exemplary structure of the dust box 10 described above, the dust box 10 can be further provided with a buckle assembly 30 to facilitate the buckle connection of the dust box 10 with other devices. The following can specifically describe an example of the buckle assembly 30 of the dust box assembly 1.

[0050] As shown in Figure 4 , the buckle assembly 30 can be used for buckle connection with other devices, so that the dust box assembly 1 and other devices can be assembled and used. The other devices are, for example, the device body of the cleaning device.

[0051] Specifically, the buckle assembly 30 can include a pressing part 31, an elastic part 33, and a buckle rod 32. The pressing part 31 is connected to the buckle rod 32. For example, the buckle rod 32 can be an integral whole, and the pressing part 31 is connected to the middle region between the two ends of the buckle rod 32. The two ends of the buckle rod 32 are respectively provided with a buckle part 321 protruding. Of course, as shown in Figure 4 , the number of buckle rods 32 can be two, which are respectively connected to the two opposite sides of the pressing part 31. Each buckle rod 32 has one end connected to the pressing part 31 and the other end extending away from the pressing part 31 and provided with a buckle part 321. When the dust box assembly 1 of the present embodiment is buckled with other devices, for example, a buckle groove is correspondingly provided on the other device, and the buckle part 321 is buckled with the corresponding buckle groove.

[0052] The elastic part 33 can be used to elastically support the pressing part 31. The pressing part 31 is elastically supported on the dust box 10 by the elastic part 33. As shown in Figure 4 ​As shown, the first shell 11 has a first placement groove 1110, and the first placement groove 1110 corresponds to the notch 1213 of the second shell 12. The first placement groove 1110 and the side wall 112 of the first shell 11 extend in the same direction. The first placement groove 1110 can use part of the side wall 112 as its groove wall, that is, the opening direction of the first placement groove 1110 is toward the cover body 13. The pressing portion 31 has a second placement groove 310, and the extension direction of the second placement groove 310 is opposite or approximately opposite to the protruding direction of the snap portion 321. The elastic portion 33 can be a spring, one end of which extends into the first placement groove 1110 to support the first placement groove 1110, and the other end can be exposed outside the first placement groove 1110. The other end of the elastic portion 33 is supported in the second placement groove 310. The size of the second placement groove 310 can be configured to accommodate the pressing portion 31, so that when the pressing portion 31 is pressed, it can be partially accommodated in the second placement groove 310.

[0053] like Figure 4 As shown, the other side of the second housing 12 can further be formed with a rod receiving groove 1212, spaced apart from the groove 1210. The snap rod 32 can be received in the rod receiving groove 1212. When the snap rod 32 is received in the rod receiving groove 1212, a notch 1213 is formed in the second housing 12 corresponding to the pressing portion 31. When the snap rod 32 is received in the rod receiving groove 1212, the snap portion 321 extends toward the cover 13.

[0054] In this embodiment, when the second shell 12 and the cover body 13 are closed, the rod receiving groove 1212 and the channel cavity 101 can be isolated from each other and not connected to each other, so as to ensure that the suction force of the dust suction port 110 can better absorb garbage objects. A snap hole (not marked) is provided on the cover body 131 at the position corresponding to the snap portion 321. When the pressing portion 31 is not pressed, the elastic portion 33 is elastically supported between the first placement groove 1110 and the second placement groove 310, the snap rod 32 is pushed against the top, and the snap portion 321 can protrude from the snap hole so that it can be snap-connected when assembled with other devices. When the pressing portion 31 is pressed, the elastic portion 33 is further elastically compressed, and the pressing portion 31 can move toward the bottom wall 111, for example, it can move into the first placement groove 1110, and the snap rod 32 moves away from the cover body 13 so that the snap portion 321 does not protrude from the snap hole of the cover body 13, so that it can be disengaged. The latch rod 32 can be limited by the rod receiving groove 1212 , thereby limiting the pressing portion 31 from being pressed and continuing to move.

[0055] Of course, positioning posts (not shown) can be provided in both the first placement groove 1110 and the second placement groove 310 to position and fix the elastic portion 33 , for example, both ends of the spring are respectively sleeved on the positioning posts.

[0056] See Figure 5 and Figure 6The second exemplary structure of the dust box 10 can also be described in the embodiment, and the details are as follows:

[0057] The first shell 11a can be provided in a plate shape. The second shell 12a includes a top wall 121a and a side wall 122a surrounding the outer periphery of the top wall 121a. A part of the side wall 122a extends from the top wall 121a toward the first shell 11a, and the top wall 121a and the part of the side wall 122a are surrounded to form a groove structure. Another part of the side wall 122a extends from the top wall 121a toward the cover 13a. When the second shell 12a is covered on the first shell 11a, the top wall 121a, the side wall 122a, and the bottom wall 111a form the accommodation cavity 100. The first shell 11a and the second shell 12a can be sealed and covered by a suitable sealing member.

[0058] The dust suction port 110 is provided on the side wall 122a of the second shell 12a. The dust box 10 can also include a dust suction part 14a, which can be provided on the side wall 122a of the second shell 12a to communicate with the dust suction port 110 of the second shell 12a. The side of the dust suction part 14a away from the dust suction port 110 is provided in an inclined manner. For example, the angle between the plane where the side of the dust suction part 14a away from the dust suction port 110 is located and the plane where the dust suction port 110 is located is greater than 0° and less than 90°, and can be 45°. Optionally, the dust suction part 14a is detachably provided on the second shell 12a. Optionally, the dust suction part 14a is rotatably provided on the second shell 12a, for example, one side of the dust suction part 14a in the length direction thereof is rotatably connected to the second shell 12a (for example, the rotation connection can be achieved by a rotation shaft), and the other side of the dust suction part 14a in the length direction thereof is snap-connected to the second shell 12a. The length direction of the dust suction part 14a is consistent or substantially consistent with the length direction of the dust suction port 110. After the dust suction part 14a and the second shell 12a are disconnected, the other side of the dust suction part 14a in the length direction thereof can rotate around the rotation axis of one side of the dust suction part 14a in the length direction thereof, so that the dust suction port 110 can be exposed, thereby facilitating observation, cleaning, and repair operations.

[0059] The side of the top wall 121a away from the first shell 11a and the other part of the side wall 122a form a groove 1210a, and the groove 1210a and the groove structure adjacent to the side of the first shell 11a are located on both sides of the top wall 121a, respectively. The cover 13a is covered on the second shell 12a to cooperatively form the passage cavity 101. The second shell 12a and the cover 13a can be sealed and covered by a suitable sealing member.

[0060] The second housing 12a further comprises an extension 123a on opposite sides of the second housing 12a. Specifically, the extension 123a has a space in which a portion of the side wall 122a of the second housing 12a can serve as an outer side wall (facing the outside of the dust box 10) of the extension 123a, and of course can also serve as an inner side wall of the extension 123a. When the first housing 11a and the second housing 12a are closed, the space of the extension 123a is not directly communicated with the accommodation cavity 100, but is communicated with the passage cavity 101. The extension 123a is provided with an air outlet 120, for example, provided on the outer side wall of the extension 123a, for example, provided on the portion of the side wall 122a serving as the outer side wall of the extension 123a, which communicates the space of the extension 123a.

[0061] The second housing 12a can be provided with a plurality of communication holes 1211a, which can penetrate the top wall 121a. In the present embodiment, the number of the communication holes 1211a can be multiple, and the shape can be circular, oval or square, etc. The communication holes 1211a are used to communicate the passage cavity 101 and the accommodation cavity 100.

[0062] The filter screen assembly comprises a first filter screen 15a and a second filter screen 16a. The filtering accuracy of the second filter screen 16a is lower than that of the first filter screen 15a. In other words, the second filter screen 16a can serve as a coarse filter screen (primary efficiency filter screen), and the first filter screen 15a serves as a fine filter screen (high efficiency filter screen). For example, both the second filter screen 16a and the first filter screen 15a are in the form of mesh, and the mesh size of the second filter screen 16a is larger than that of the first filter screen 15a. For example, the second filter screen 16a can have 4 meshes, and the first filter screen 15a can have 100 meshes. The overall size of the second filter screen 16a and the overall size of the first filter screen 15a are both adapted to the communication holes 1211a, i.e. the size of the mesh of the second filter screen 16a is larger than that of the first filter screen 15a. Of course, as shown in the drawings, the mesh surface of the first filter screen 15a can be a folded filter screen. Figure 5

[0063] The second filter screen 16a is arranged in the second housing 12a, which can be located in the communication hole 1211a, or can be located outside the communication hole 1211a to cover the communication hole 1211a. The second filter screen 16a can be a whole, which covers a plurality of communication holes 1211a. The second filter screen 16a can also be a plurality, which corresponds to each communication hole 1211a. The first filter screen 15a can be arranged in the space of the extension 123a to cover the air outlet 120 and filter the airflow flowing out of the air outlet 120. The number of the second filter screen 16a is, for example, at least two, which corresponds to at least two air outlets 120, i.e. one second filter screen 16a is arranged corresponding to each air outlet 120.

[0064] ​By correspondingly arranging the first filter screen 15a at the at least two air outlets 120, a multi-high-efficiency filter screen filtering system is formed. In this way, the plurality of first filter screens 15a can respectively filter the airflow flowing through the at least two air outlets 120, thereby improving the filtering effect and filtering efficiency, and further improving the speed of airflow flow. Further, the plurality of communication holes 1211a can increase the airflow passing area, thereby avoiding the problem of airflow not being smooth due to the accumulation of garbage objects in the containing cavity 100.

[0065] The second exemplary structure of the dust box 10 can use the same buckle assembly 30 as the first exemplary structure of the dust box 10. Of course, the second specific exemplary structure of the dust box 10 can also be provided with a buckle assembly 30 of a different structure from the first exemplary structure of the dust box 10. Another example of the buckle assembly 30 will be specifically described below.

[0066] Referring to Figure 5 and Figure 6 , the buckle assembly 30 can include a pressing portion 31a, a buckle rod 32a, and an elastic portion 33a, and the pressing portion 31a is connected to the buckle rod 32a. For example, the buckle rod 32a can be an integral whole, and for example, the pressing portion 31a is connected to the middle region between the two ends of the buckle rod 32a. The two ends of the buckle rod 32a are respectively provided with buckle portions 321a. Of course, as Figure 5 indicated, the number of buckle rods 32a can be two, which are respectively connected to the two sides of the pressing portion 31a. One end of each buckle rod 32a is connected to the pressing portion 31a, and the other end extends away from the pressing portion 31a and is provided with a buckle portion 321a. The elastic portion 33a is arranged on the pressing portion 31a, and the elastic portion 33a can rotate relative to the dust box 10. The pressing portion 31a can rotate relative to the dust box 10 through the elastic portion 33a.

[0067] As Figure 5 indicated, the other side of the second shell 12a can further form a rod containing groove 1212a, which is spaced apart from the groove 1210a. Specifically, when the second shell 12a and the cover 13a are closed, the rod containing groove 1212a and the passage cavity 101 can be isolated from each other and not communicate with each other, so as to ensure that the suction force of the suction port 110 can better suck the garbage objects. As Figure 6 indicated, the buckle rod 32a and the pressing portion 31a can be accommodated in the rod containing groove 1212a. For example, the part of the groove body of the rod containing groove 1212a corresponding to the buckle rod 32a is adapted to the shape of the buckle rod 32a, and the part of the groove body of the rod containing groove 1212a corresponding to the pressing portion 31a is adapted to the shape of the pressing portion 31a. When the buckle rod 32a and the pressing portion 31a are accommodated in the rod containing groove 1212a, the elastic portion 33a is elastically deformed with the pressing portion 31a being pressed.

[0068] The elastic part 33a comprises a rotating rod 331a, a torsion spring 332a and a connecting body 333a fixed to the pressing part 31a. The connecting body 333a is provided with a torsion spring placing slot (not labeled), for example, in the middle region of the connecting body 333a. The rotating rod 331a is arranged along the length direction of the connecting body 333a, and specifically passes through one end of the connecting body 333a, the torsion spring placing slot and the other end of the connecting body 333a in sequence, and the two ends of the connecting body 333a are provided with protrusions. The torsion spring 332a is sleeved on the part of the rotating rod 331a located in the torsion spring placing slot. Of course, other forms of elastic bodies can be used to replace the torsion spring 332a.

[0069] The two ends of the rotating rod 331a can be directly arranged to rotate in the second shell 12a. The rotating rod 331a can also be indirectly arranged to rotate in the second shell 12a. For example Figure 5 and Figure 6 As shown in FIGS. 13 and 14, the buckle assembly 30 can further comprise a fixing part 34a provided with a connecting body placing slot, and the fixing part 34a is provided with a hole on each side wall of the connecting body placing slot, and the part of the rotating rod 331a protruding from the two ends of the connecting body 333a is inserted into the hole to be rotatably connected. When the pressing part 31a and the buckle rod 32a are placed in the rod accommodating slot 1212a, the fixing part 43a is fixedly connected with the second shell 12a, for example, by screwing. The two ends of the torsion spring 332a can be limited by the second shell 12a and the connecting body 333a respectively, so that the torsion spring 332a can be elastically deformed during relative rotation.

[0070] When the buckle rod 32a is accommodated in the rod accommodating slot 1212a, the buckle part 321a extends towards the cover 13a. When the pressing part 31a is pressed in the direction of the bottom wall 111a, the pressing part 31a rotates along the axis of the rotating rod 331a, and the torsion spring 332a can further elastically deform, so as to drive the buckle part 321a to displace and move towards the bottom wall 111a. When the pressing force on the pressing part 31a disappears, the pressing part 31a reversely rotates (relative to the pressed state) due to the elastic restoring force of the torsion spring 332a, and drives the buckle part 321a to reversely displace and move away from the bottom wall 111a.

[0071] The buckle hole (not labeled) is formed on the cover 13a corresponding to the position of the buckle portion 321a. When the pressing portion 31a is not pressed, the buckle portion 321a protrudes from the buckle hole, so that the buckle connection can be performed. When the pressing portion 31a is pressed and subjected to the pressure in the direction of the bottom wall 111a, the pressing portion 31a rotates along the axis of the rotating rod 331a in the direction of the bottom wall 111a, so that the buckle portion 321a is displaced in the direction of the bottom wall 111a, so that the buckle portion 321a does not protrude from the buckle hole of the cover 13a, facilitating the unbuckling process. When the pressing portion 31a is further pressed and rotated, the buckle rod 32a can be limited by the rod groove 1212a, so as to limit the pressing portion 31a to be pressed and continuously moved.

[0072] By setting the elastic rotating buckle assembly 30, the buckle connection can be more convenient, the structural stability is better, and compared with the previous exemplary structure, the structure design can be further simplified.

[0073] Referring to Figures 7 to 9 , the third specific example structure of the dust box 10 can be described as follows:

[0074] As Figure 9 shown, the dust box 10 is provided with at least two communication holes 1211b spaced apart from each other. Among the at least two communication holes 1211b, the projection point D of the center C of the suction port 110 on the line connecting the center A of one communication hole 1211b and the center B of the other communication hole 1211b is located between the centers A and B of the two communication holes 1211b. That is, the intersection point D of the perpendicular line of the line connecting the centers A and B of the two communication holes 1211b and the line connecting the centers A and B of the two communication holes 1211b is located between the centers A and B of the two communication holes 1211b. The center C of the suction port 110 refers to the geometric center of a geometric shape identical to and matching the shape of the suction port 110 or the center of gravity of a homogeneous object identical to and matching the shape of the suction port 110. Similarly, the centers A and B of the communication holes 1211b refer to the geometric centers of geometric shapes identical to and matching the shapes of the communication holes 1211b or the centers of gravity of homogeneous objects identical to and matching the shapes of the communication holes 1211b.

[0075] As Figure 7 and Figure 8 shown, the dust box 10 can include a first shell 11b, a second shell 12b, and a cover 13b. The second shell 12b is provided on the first shell 11b to enclose the accommodation cavity 100, and the cover 13b is provided on the second shell 12b to enclose the passage cavity 101.

[0076] As Figure 8As shown, the first shell 11b is provided in a groove shape, and can specifically include a bottom wall 111b and a side wall 112b surrounding the bottom wall 111b, and the bottom wall 111b and the side wall 112b form a groove structure. When the second shell 12b is arranged on the first shell 11b, the groove structure of the first shell 11b can be covered to form the accommodation cavity 100. The first shell 11b can be provided with a dust suction port 110 on the side wall 112b, and the dust suction port 110 is in communication with the groove structure, i.e., the accommodation cavity 100.

[0077] The second shell 12b can be substantially plate-shaped. The second shell 12b can be provided with at least two communication holes 1211b, which pass through one side of the second shell 12b to the other side of the second shell 12b. The communication holes 1211b are in communication with the accommodation cavity 100. The provision of at least two communication holes 1211b can enable the airflow entering the dust suction port 110 to form multiple flow directions, so that the sucked garbage and the like can be dispersed and accumulated along different air ducts, thereby improving the space utilization of the dust box 10.

[0078] As shown, Figure 9 the center C of the dust suction port 110 is located at the projection point D of the line connecting the center A of the one communication hole 1211b and the center B of the other communication hole 1211b, and the projection point D is located between the centers A and B of the two communication holes 1211b, so that the airflow entering the dust suction port 110 can be divided into two directions, for example, to the one communication hole 1211b and the other communication hole 1211b and other communication holes 1211b, thereby improving the flow direction of the airflow, and the sucked garbage objects can be preferentially accumulated from both sides, thereby improving the space utilization of the dust box 10.

[0079] In some embodiments, as shown, Figure 8 the arrangement direction of the two communication holes 1211b can be substantially along the length direction of the second shell 12b, so that the two communication holes 1211b are arranged at the adjacent regions of the two ends of the second shell 12b in the length direction (the line direction of the two ends is substantially the length direction of the second shell 12b), so that when the garbage objects are sucked into the dust box 10, they can be preferentially accumulated on both sides along the airflow, thereby improving the situation that the garbage objects are concentrated in the adjacent region of the dust suction port 110, reducing the phenomenon of blocking the dust suction port 110, and improving the space utilization of the dust box 10. Further, the positions of the two communication holes 1211b can be adjacent to the side of the first shell 11b opposite to the dust suction port 110 (the side away from the dust suction port 110), and the line connecting the centers of the two communication holes 1211b and the center of the dust suction port 110 is a triangle, for example, an isosceles triangle. Of course, the structure of the second shell 12b can also be as shown in the first exemplary structure of the dust box 10.

[0080] Of course, the arrangement position of the communication holes 1211b can be adjusted by specifically designing the structure of the first shell 11b, the second shell 12b and the third shell 13b. For example, the following cases can also occur:

[0081] As shown in FIG. 1, in one embodiment, the second shell 12b can include a top wall and a side wall, and the first shell 11b is arranged in a plate shape. The third shell 13b is arranged on the first shell 11b, and the second shell 12b separates the accommodation cavity 100 and the passage cavity 101. At least two of the communication holes 1211b can be arranged on the top wall and the side wall, and both of them communicate the accommodation cavity 100 and the passage cavity 101. Of course, the at least two communication holes can also be arranged on the opposite two side walls of the second shell 12b. Figure 10 As shown in FIG. 2, in another embodiment, the first shell 11b includes a bottom wall and a side wall, and the second shell 12b is arranged on the side wall of the first shell 11b. The third shell 13b is arranged on the bottom wall of the first shell 11b. The second shell 12b separates the accommodation cavity 100 and the passage cavity 101. At least one of the at least two communication holes 1211b is arranged on the second shell 12b, and at least another one is arranged on the side wall of the first shell 11b, and both of them communicate the accommodation cavity 100 and the passage cavity 101. Of course, the at least two communication holes 1211b can also be arranged on the opposite two side walls of the first shell 11b.

[0082] Figure 11 Optionally, the dust box assembly 1 can include at least two filter screen assemblies, each of which is used to filter the airflow of one communication hole 1211b. Each filter screen assembly includes a first filter screen 15b, and the number of the first filter screens 15b can correspond to the number of the communication holes 1211b. The first filter screen 15b can be arranged in the communication hole 1211b to filter the airflow, for example, it can be partially accommodated in the communication hole 1211b. Of course, the first filter screen 15b can be arranged on the side of the second shell 12b facing the cover 13b, and it covers the communication hole 1211b to filter the airflow. Optionally, each filter screen assembly can also include a second filter screen 16b, and the filtering precision of the first filter screen 15b is greater than that of the second filter screen 16b. The second filter screen 16b can be arranged in the communication hole 1211b, and the first filter screen 15b covers the second filter screen 16b. The first filter screen 15b is closer to the cover 13b than the second filter screen 16b. In other words, the first filter screen 15b is located downstream of the second filter screen 16b in the airflow, and the airflow is filtered by the second filter screen 16b and the first filter screen 15b in sequence.

[0083] Optionally, the dust box assembly 1 can include at least two filter screen assemblies, each of which is used to filter the airflow of one communication hole 1211b. Each filter screen assembly includes a first filter screen 15b, and the number of the first filter screens 15b can correspond to the number of the communication holes 1211b. The first filter screen 15b can be arranged in the communication hole 1211b to filter the airflow, for example, it can be partially accommodated in the communication hole 1211b. Of course, the first filter screen 15b can be arranged on the side of the second shell 12b facing the cover 13b, and it covers the communication hole 1211b to filter the airflow. Optionally, each filter screen assembly can also include a second filter screen 16b, and the filtering precision of the first filter screen 15b is greater than that of the second filter screen 16b. The second filter screen 16b can be arranged in the communication hole 1211b, and the first filter screen 15b covers the second filter screen 16b. The first filter screen 15b is closer to the cover 13b than the second filter screen 16b. In other words, the first filter screen 15b is located downstream of the second filter screen 16b in the airflow, and the airflow is filtered by the second filter screen 16b and the first filter screen 15b in sequence.

[0084] ​By setting at least two communication holes 1211b, corresponding to at least two first filter screens 15b, the airflow entering the containing cavity 100 through the dust suction port 110 can form at least two air ducts, thereby changing the flow direction of the air ducts and optimizing the flow of the airflow, so that the garbage sucked into the dust box 10 can be more effectively stored, thereby improving the space utilization of the dust box 10, making the filtering efficiency of the dust box 10 better, and the cleaning efficiency higher, so as to improve the suction of the dust suction port 110.

[0085] The cover body 13b is covered on the second shell 12b to enclose the passage cavity 101. For example, the side of the cover body 13b facing the second shell 12b is formed with a groove (not shown in the figure), and when the cover body 13b and the second shell 12b are closed, the groove is enclosed to form the passage cavity 101. Of course, the structure of the cover body 13b and the second shell 12b can also be the same as that of the cover body 13b and the second shell 12b in the first exemplary structure of the dust box.

[0086] Optionally, the dust box 10 can further include a rotating member 17b, and the cover body 13b can be rotationally connected to the first shell 11b through the rotating member 17b, so as to realize the mutual closing or opening of the first shell 11b and the cover body 13b. When the first shell 11b and the cover body 13b are opened, the second shell 12b can be exposed, which can facilitate the cleaning and maintenance of the first filter screen 15b and the second filter screen 16b. Specifically, the rotating member 17b can include a rotating shaft 171b, a first shaft receiving portion 172b provided on the first shell 11b, and a second shaft receiving portion 173b provided on the cover body 13b, and the two ends of the rotating shaft 171b are respectively embedded in the first shaft receiving portion 172b and the second shaft receiving portion 173b, so that the first shell 11b and the cover body 13b can be relatively rotated.

[0087] Optionally, the cover body 13b can include a cover body main body 131b and a filter screen upper cover 132b. The cover body main body 131b is formed with a mounting hole 130b at a position corresponding to the first filter screen 15b, and the mounting hole 130b communicates with the passage cavity 101. When the cover body main body 131b is covered on the side wall 112b of the first shell 11b, the second filter screen 16b and the first filter screen 15b can be exposed. Optionally, the filter screen upper cover 132b is rotationally connected to the cover body main body 131b. For example, one side of the filter screen upper cover 132b is rotationally provided on the inner wall of the mounting hole 130b of the cover body main body 131b through a rotating shaft. The filter screen upper cover 132b can close the mounting hole 130b by rotating, or open the mounting hole 130b to expose the second filter screen 16b and the first filter screen 15b. Optionally, the mounting hole 130b is arranged opposite to the communication hole 1211b, and the size of the mounting hole 130b is greater than or equal to the size of the communication hole 1211b. Of course, in other embodiments, the size of the mounting hole 130b can also be smaller than the size of the communication hole 1211b.

[0088] Further, the filter screen upper cover 132b can be matched with the mounting hole 130b through a sealing member (not shown, but labeled) that is shaped to fit the mounting hole 130b, to improve the sealing effect of the dust box 10 and ensure effective airflow in the dust box 10. Figure 4

[0089] By setting the rotatable filter screen upper cover 132b to match the mounting hole 130b, the second filter screen 16b and the first filter screen 15b can be easily disassembled or cleaned, and the mounting hole 130b can also facilitate observation of the interior of the dust box 10, making it easier to check and repair.

[0090] The air outlet 120 can be provided on the cover 13b. Of course, when the second shell 12b is like the second shell 12 in the first exemplary structure of the dust box 10, the air outlet 120 can also be provided on the second shell 12. Optionally, the cover 13b can also have a buckle hole.

[0091] In one embodiment, as shown in Figure 7 When the first filter screen 15b is partially accommodated in the communication hole 1211b, the first filter screen 15b is inclined, for example, the first filter screen 15b can be inclined toward the direction of the air outlet 120, so that the airflow filtered by the first filter screen 15b can be quickly delivered to the air outlet 120. Specifically, the side of the first filter screen 15b adjacent to the cover 13b forms an angle with the side of the second shell 12b facing the cover 13b, for example, the angle is greater than 90° and less than 180°.

[0092] Optionally, the side edge of the second shell 12b away from the dust inlet 110 forms a notch 1213b, and the side of the second shell 12b facing the cover 13b is provided with a protrusion 1212b, which surrounds the notch 1213b. The side of the cover 13b facing the second shell 12b forms a matching groove (not shown), the shape of the matching groove is adapted to the shape of the protrusion 1212b, and when the cover 13b covers the second shell 12b, the protrusion 1212b of the cover 13b can be embedded in the matching groove, so that the passage cavity 101 and the notch 1213b are spaced apart. As shown in Figure 8 The first shell 11b has a first placement groove 1110b, and the opening direction of the first placement groove 1110b faces the cover 13b and corresponds to the notch 1213b of the second shell 12b. When the second shell 12b is covered on the first shell 11b, the accommodation cavity 100 and the first placement groove 1110b are spaced apart and not connected to each other.

[0093] ​For the third exemplary structure of the dust box 10, the dust box 10 can be further provided with a snap assembly 30 to facilitate the snap connection of the dust box 10 with other devices. The following can specifically describe another example of the snap assembly 30 of the dust box assembly 1.

[0094] The snap assembly 30 can include a pressing portion 31b, a snap portion 321b protruding from the pressing portion 31b, and an elastic portion 33b. The snap portion 321b is used for snap connection with a snap groove of a device body. The elastic portion 33b is used for supporting the pressing portion 31b. Specifically, the pressing portion 31b is formed with a second placement groove 310b, and the shape of the pressing portion 31b is adapted to the shape of the notch 1213b, for example. The opening direction of the second placement groove 310b is opposite to the protruding direction of the snap portion 321b. The elastic portion 33b is an elastic member such as a spring, for example, and one end of the elastic portion 33b extends into the second placement groove 310b, and the other end extends into the first placement groove 1110b. When the first shell 11b, the second shell 12b, and the cover assembly are completed, the other end of the elastic portion 33b is supported in the first placement groove 1110b, thereby supporting the pressing portion 31b and the snap portion 321b. The snap portion 321b corresponds to the snap hole of the cover 13b. Optionally, the opposite two side walls 112b in the first placement groove 1110b are provided with a sliding groove, and the pressing portion 31b is provided with a sliding rail corresponding to the two sides, and the sliding rail is embedded into the sliding groove, so that the pressing portion 31b can slide in the first placement groove 1110b.

[0095] When the pressing portion 31b is not pressed, the elastic portion 33b is elastically supported between the first placement groove 1110b and the second placement groove 310b, and the pressing portion 31b is abutted to make the snap portion 321b protrude into the snap hole, so as to be snap connected with the device body when assembled. When the pressing portion 31b is not pressed, the elastic portion 33b is further elastically compressed, and the pressing portion 31b can move towards the first shell 11b, for example, can move into the first placement groove 1110b, and the snap portion 321b moves away from the cover 13b, so that the snap portion 321b does not protrude into the snap hole of the cover 13b, so as to be disengaged.

[0096] Taking a robot vacuum cleaner as an example, the robot vacuum cleaner (not shown in the figure) includes a device body (not shown in the figure) and the dust box assembly 1 of the present embodiment, and the device body is used for cleaning, for example, cleaning the ground.

[0097] Specifically, for example, the device body includes a shell, a rolling brush arranged on the shell, and a driving motor for driving the rolling brush to roll. The machine body can be used in cooperation with the dust box assembly 1 of the embodiment, for example, a buckle groove (not shown in the figure) is arranged on the shell of the device body, and the buckle groove is buckled with the buckle part 321 (321a, 321b). Specifically, when the pressing part 31 (31a, 31b) is subjected to pressure, the elastic part 33 (33a, 33b) is elastically deformed, and the pressing part 31 (31a, 31b) can drive the buckle part 321 (321a, 321b) to move away from the buckle groove, so that the buckle part 321 (321a, 321b) can be unbuckled with the buckle groove. When the pressing part 31 (31a, 31b) is not subjected to pressure, the elastic restoring force of the elastic part 33 (33a, 33b) can drive the pressing part 31 (31a, 31b) to move close to the buckle groove or keep the state of being close to the buckle groove, so that the buckle part 321 (321a, 321b) can be buckled with the buckle groove.

[0098] The buckle assembly 30 is arranged in the embodiment, which can facilitate the buckle connection with the device body of the cleaning device. In some embodiments, the buckle assembly 30 includes two buckle parts 321 (321a), which can make the buckle connection between the dust box assembly 1 of the embodiment and the device body more secure, enhance the fixing effect of the structures, and further limit the relative displacement between the dust box 10 and the shell of the device body, thereby ensuring the stability of the structure.

[0099] The connecting piece 22 of the dust collection assembly 20 of the embodiment can be fixed to the shell of the device body. The good buckle effect and the limiting effect of the buckle assembly 30 can effectively ensure the sealing effect of the connecting piece 22 and the air outlet 120.

[0100] In order to further enhance the speed of air flow and optimize the design of the structure space, the embodiment provides an example structure of the connecting piece 22 as follows:

[0101] Referring to Figure 12 The shape of the connecting piece 22 of the embodiment can be irregular. One side of the connecting piece 22 can be formed with a first ventilation opening 221 for communicating with the air outlet 120, and the other side of the connecting piece 22 is formed with a second ventilation opening 222 communicating with the first ventilation opening 221. The shape of the first ventilation opening 221 can be adapted to the shape of the air outlet 120, or can be designed according to specific conditions. For example Figure 9 The shape of the first ventilation opening 221 is adapted to the shape of the air outlet 120 as shown in Figures 1-6 The shape of the first ventilation opening 221 is adapted to the shape of the air outlet 120 as shown in Figure 9The first air vent 221 can be designed according to Figures 7-8 The air outlet 120 is designed in a specific shape so as to be adapted to the first air vent 221. In the embodiment, the shape of the connecting member 22 and the first air vent 221 is not limited, and the same applies to the second air vent 222.

[0102] For example, the first air vent 221 on one side of the connecting member 22 and the second air vent 222 on the other side of the connecting member 22 can be arranged in a staggered manner. For example, the projection of the first air vent 221 on the plane of the air outlet 120 and the projection of the second air vent 222 on the plane of the air outlet 120 can partially overlap or completely not overlap after the dust box 10 is assembled.

[0103] In the embodiment, the angle between the plane of the first air vent 221 and the plane of the second air vent 222 is greater than 0° and less than 180°. Alternatively, the angle between the plane of the first air vent 221 and the plane of the second air vent 222 is greater than or equal to 20° and less than 100°. Alternatively, the angle between the plane of the first air vent 221 and the plane of the second air vent 222 is greater than or equal to 30° and less than or equal to 90°. Alternatively, the angle between the plane of the first air vent 221 and the plane of the second air vent 222 is greater than or equal to 40° and less than or equal to 60°. Alternatively, the angle between the plane of the first air vent 221 and the plane of the second air vent 222 is 46°.

[0104] Referring to Figure 13 As another exemplary structure of the connecting member 22, the main difference from the above exemplary structure includes that a partition plate 223 is arranged in the first air vent 221 of the connecting member 22, and the partition plate 223 has one or more through holes arranged at intervals. The connecting member 22 is connected between the fan 21 and the air outlet 120, and the through holes can communicate the second air vent 222 and the air outlet 120. By further arranging the partition plate 223, foreign matter entering the fan 21 through the first air vent 221 can be blocked to prevent the fan 21 from being disturbed or damaged.

[0105] The fan 21, for example, is an air extractor or an air blower, and can achieve the function of air extraction. The fan 21 is arranged on the other side of the connecting member 22 and communicates with the second air vent 222. When the fan 21 is working, the airflow sequentially passes through the dust suction port 110, the accommodation cavity 100, the channel cavity 101, the space of the extension part 122, the air outlet 120, and the first air vent 221 and the second air vent 222, and is extracted by the fan 21.

[0106] In the embodiment, the connecting piece 22 can be sealed by the sealing ring 24 when connected to the air outlet 120. The sealing ring 24 is, for example, a sealing rubber ring. That is, the sealing ring 24 can be arranged at the connection between the first air vent 221 and the air outlet 120 to seal the connection.

[0107] The embodiment can optimize the air duct design of the whole dust box assembly 1 by arranging the ventilation structure of the connecting piece 22 and the angle between the plane where the first air vent 221 is located and the plane where the second air vent 222 is located, so that the flow speed of the airflow is faster. Moreover, the angle between the plane where the first air vent 221 is located and the plane where the second air vent 222 is located can make the fan 21 have a certain inclination (as shown in Figure 1 when installed, which can effectively save the installation space of the fan 21.

[0108] As shown in Figure 2 , the dust suction assembly 20 of the embodiment can further include a shock-absorbing pad 23. The other side of the connecting piece 22 where the second air vent 222 is arranged is formed with a receiving groove 223. The receiving groove 223 is connected to the second air vent 222. The shape of the receiving groove 223 is adapted to the shape of the shock-absorbing pad 23. The shock-absorbing pad 23 is accommodated in the receiving groove and located between the fan 21 and the connecting piece 22.

[0109] The embodiment can effectively reduce the vibration of the fan 21 when working by arranging the receiving groove 223 to accommodate the shock-absorbing pad 23 and arranging the fan 21 on the connecting piece 22 through the shock-absorbing pad 23, so as to avoid effectively reducing the influence of the vibration of the fan 21 on the connecting piece 22, which can effectively ensure the sealing effect of the connecting piece 22 and the dust box 10, and further ensure the air suction effect of the fan 21.

[0110] The cleaning device 300 described in the embodiments of the present application is, for example, the aforementioned sweeping robot or dust collector, but is not limited to the sweeping robot and the dust collector. Referring to Figure 14 , the cleaning device 300 of the embodiment includes a device main body 2 and the dust box assembly 1 described in the above embodiments.

[0111] For example, for the dust collector, the device main body 2 includes a shell, a circuit board, etc., and can further include a floor brush connected to the shell through an air pipe. The dust box assembly 1 can be arranged in the shell of the device main body 2 to absorb sundries, dust, etc. through the floor brush and the air pipe.

[0112] For the sweeping robot, the device main body 2 includes a shell, a rolling brush, and a motor driving the rolling brush to roll. The rolling brush is used to clean sundries, dust, etc. The dust box assembly 1 is used to absorb the sundries, dust, etc. cleaned by the rolling brush.

[0113] To sum up, the application can provide greater suction and more stable airflow by the design of at least two fans 21 and two air ducts, thereby effectively improving the cleaning effect.

[0114] The application can optimize the airflow direction in the dust box 10 by setting at least two communication holes 1211 for setting the first filter screen 15, and improve the filtering effect and cleaning effect of the dust box 10 by the air duct design.

[0115] The above is only an embodiment of the application, and does not limit the patent scope of the application. Any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the application.

Claims

1. A dust box assembly, characterized in that: include:

18. The dust box of claim 17, wherein the dust box comprises a dust receiving chamber, a passage chamber, a dust suction port, and an air outlet, the dust suction port being connected to the dust receiving chamber; the number of the air outlets being at least two, the at least two air outlets being connected to the receiving chamber, the at least two air outlets being located on opposite sides of the dust box; the dust box being provided with at least two communicating holes arranged at intervals from each other, the passage chamber and the receiving chamber being adjacent to each other in the thickness direction of the dust box, and at least two communicating holes being connected to the passage chamber and the receiving chamber, the passage chamber being connected to the air outlet, wherein the passage chamber is located downstream of the receiving chamber in terms of air flow, the receiving chamber being connected to the air outlet via at least two communicating holes, the at least two communicating holes comprising a communicating hole and another communicating hole, a perpendicular line being drawn through a center of the dust suction port to connect a center of the one communicating hole and a center of the other communicating hole, the intersection of the perpendicular line and the connecting line being located between a center of the one communicating hole and a center of the other communicating hole; At least two filter assemblies are provided, and at least two of the communicating holes are respectively provided with the filter assemblies to filter the airflow passing through the dust suction port and the accommodating cavity to the air outlet.

2. The dust box assembly according to claim 1, characterized in that: The projection point of the center of the dust suction port on the line connecting the center of one communicating hole and the center of the other communicating hole among the at least two communicating holes is located between the centers of the one communicating hole and the other communicating hole.

3. The dust box assembly according to claim 1 or 2, characterized in that: The dimension of the passage cavity in the thickness direction of the dust box is smaller than the dimension of the accommodating cavity in the thickness direction of the dust box.

4. The dust box assembly according to claim 3, characterized in that: The dust box includes a first shell, a second shell and a cover body, the second shell cover is arranged on the first shell to enclose the accommodating cavity, the cover body is arranged on the first shell or the second shell to form the channel cavity, the second shell is located between the first shell and the cover body to separate the channel cavity and the accommodating cavity, each of the communicating holes is opened in the second shell or the first shell, the dust suction port is opened in the first shell and connected to the accommodating cavity, and the air outlet is opened in the cover body and connected to the channel cavity.

5. The dust box assembly according to claim 4, characterized in that: The filter assembly includes a first filter and a second filter. The first filter is located downstream of the airflow compared to the second filter. The filtering accuracy of the first filter is greater than that of the second filter.

6. The dust box assembly according to claim 4, characterized in that: The one communicating hole and the other communicating hole are respectively adjacent to both ends of the second shell in the length direction; and / or at least one communicating hole is opened in the second shell, and at least one communicating hole is opened in the first shell.

7. The dust box assembly according to claim 4, characterized in that: The cover body includes a cover body main body and a filter upper cover, the cover body main body forms a mounting hole, and the filter upper cover is rotatably connected to the cover body so that the mounting hole can be closed or opened by rotation; the mounting hole is arranged opposite to the communicating hole, and the size of the mounting hole is greater than or equal to the size of the communicating hole.

8. The dust box assembly according to claim 4, characterized in that: The dust box includes a rotating member, and the cover is rotatably connected to the first shell through the rotating member, so that the cover and the first shell can be closed or opened by rotation; And / or, the dust box includes a snap-fit ​​assembly for snap-fit ​​connection with the device body of the cleaning device.

9. A dust box, characterized in that: The dust box is formed with a accommodating cavity, a passage cavity, a dust suction port and an air outlet, the dust suction port is connected to the accommodating cavity; the number of the air outlets is at least two, the at least two air outlets are both connected to the accommodating cavity, and the at least two air outlets are respectively located on two sides opposite to the dust box; The dust box is provided with at least two communicating holes arranged at intervals from each other, the channel cavity and the accommodating cavity are adjacent to each other in the thickness direction of the dust box, and at least two of the communicating holes communicate with the channel cavity and the accommodating cavity, the channel cavity is communicated with the air outlet, wherein the channel cavity is located downstream of the airflow compared to the accommodating cavity, the accommodating cavity is communicated with the air outlet through the communicating hole, and the accommodating cavity is communicated with the air outlet through the communicating hole, the at least two communicating holes include one communicating hole and another communicating hole, a perpendicular line is drawn through the center of the dust suction port to connect the center of the one communicating hole and the center of the other communicating hole, and the intersection point of the perpendicular line and the connecting line is located between the center of the one communicating hole and the center of the other communicating hole; At least two of the communicating holes are respectively provided with filter assemblies to filter the airflow passing through the dust suction port and the accommodating cavity to the air outlet.

10. A cleaning device, characterized in that: include: The dust box assembly according to any one of claims 1 to 8; A fan is provided corresponding to the air outlet of the dust box, and is used to draw air to form an airflow through the dust suction port, the accommodating cavity and the air outlet, so that the filter assembly is used to filter the airflow through the dust suction port, the accommodating cavity to the air outlet.

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