DUST-COLLECTING BOX AND CLEANING DEVICE

Abstract

A dust-collecting box includes a dust-collecting box body and a filter screen. The dust-collecting box body defines a dust inlet, a dust receiving cavity and an exhaust passage which are communicated in sequence, an air inlet end of the exhaust passage is in communication with the dust receiving cavity, and an air outlet end of the exhaust passage is in pneumatic communication with a fan assembly. The filter screen is arranged between the air inlet end and the air outlet end, the filter screen filters an airflow entering the exhaust passage from the dust receiving cavity, an exhaust direction of the air outlet end is defined as a preset reference direction, and the filter screen is arranged obliquely relative to the preset reference direction.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

The present application claims priority of Chinese Patent Application No. 202211055814.6, filed on Aug. 31, 2022, titled “dust-collecting box and cleaning device”, the contents of which are incorporated herein by reference.

TECHNICAL FIELD

The present application relates to the technical field of intelligent cleaning device, and in particular, relates to a dust-collecting box and a cleaning device.

BACKGROUND

With the development of science and technology, a variety of cleaning robots, cleaning base stations and cleaning carts used in combination with the cleaning robots, and other cleaning devices have appeared in the market, which are used to automatically clean or assist users in cleaning the areas to be cleaned; some cleaning devices include dust-collecting boxes and have dust collection functions for collecting scraps of paper, dust, hair and other garbage, the dust-collecting box includes a dust inlet, a dust receiving cavity, a filter screen and an exhaust passage, the garbage is sucked into the dust receiving cavity from the dust inlet, and the filter screen allows air to pass therethrough and block the garbage, such that the air passes through the exhaust passage to be discharged, while the garbage is left in the dust receiving cavity.

However, due to the limited space of the dust-collecting box, the area of the filter screen in the existing dust-collecting box is relatively small, and when the cleaning device works, the air flow passing through the filter screen is small within a certain period of time, the air circulation is not smooth enough, and the dust collection efficiency is low.

SUMMARY

An embodiment of the present application provides a dust-collecting box, the dust-collecting box includes a dust-collecting box body and a filter screen. The dust-collecting box body defines a dust inlet, a dust receiving cavity and an exhaust passage which are communicated in sequence, an air inlet end of the exhaust passage is in communication with the dust receiving cavity, and an air outlet end of the exhaust passage is configured to be in pneumatic communication with a fan assembly. The filter screen is arranged between the air inlet end and the air outlet end, the filter screen is configured to filter an airflow entering the exhaust passage from the dust receiving cavity, an exhaust direction of the air outlet end is defined as a preset reference direction, and the filter screen is arranged obliquely relative to the preset reference direction.

Another embodiment of the present application provides a cleaning device. The cleaning device includes a device main body and the above-mentioned dust-collecting box, and the device main body defines an air suction opening and is in communication with the air outlet end.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to explain embodiments of the present application or technical solutions in the prior art more clearly, attached drawings required in the description of the embodiments or the prior art will be briefly introduced below; obviously, the attached drawings in the following description are only some embodiments of the present application, and for those of ordinary skill in the art, other drawings can be obtained according to the structures shown in these attached drawings without creative labor.

FIG. 1 is a schematic structural diagram of an embodiment of a cleaning device according to the present application;

FIG. 2 is an exploded view of an embodiment of a dust-collecting box according to the present application;

FIG. 3 is a schematic structural diagram of an embodiment of the dust-collecting box according to the present application;

FIG. 4 is a cross-sectional view of an embodiment of the dust-collecting box according to the present application;

FIG. 5 is a schematic structural diagram of an embodiment of a first cover and a second cover in the dust-collecting box according to the present application;

FIG. 6 is a schematic structural diagram of another embodiment of the first cover and the second cover according to the present application;

FIG. 7 is an enlarged view of part A in FIG. 6;

FIG. 8 is a schematic structural diagram of yet another embodiment of the second cover according to the present application;

FIG. 9 is a cross-sectional view of an embodiment of the dust-collecting box according to the present application, viewed from another direction; and

FIG. 10 is an exploded view of the dust-collecting box according to the present application, wherein the filter screen is detached from the dust-collecting box body.

DETAILED DESCRIPTION

Hereinafter, technical solutions in embodiments of the present application will be described clearly and completely with reference to attached drawings in the embodiments of the present application; obviously, the embodiments described are only part but not all of 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 labor belong to the scope claimed in the present application.

It shall be noted that, all directional indicators (such as up, down, left, right, front, back and so on) in the embodiment of the present application are only used to explain relative position relationships and movement situations among components in a specific posture (as shown in the attached drawing), and if the specific posture changes, the directional indicators will change accordingly.

In addition, in the present application, descriptions such as “first”, “second” or the like are only used for descriptive purposes, and should not be understood as indicating or implying the relative importance thereof or implicitly indicating the number of indicated technical features. Therefore, features defined with “first” and “second” may explicitly or implicitly include at least one of the features. In addition, technical solutions among the embodiments may be combined with each other on the basis that they can be realized by those of ordinary skill in the art; when the combination of the technical solutions is contradictory or impossible to be realized, it should be considered that such combination of the technical solutions does not exist, nor is it within the scope claimed in the present application.

Referring to FIG. 1 and FIG. 2, an embodiment of the present application provides a dust-collecting box 1000 which is applied to a cleaning device 3000. The cleaning device 3000 may be a cleaning robot, and a cleaning base station, a cleaning cart or a sanitation vehicle or the like that is used in combination with a cleaning robot, wherein the cleaning robot may specifically be a sweeping robot, a mopping and sweeping robot or the like.

The dust-collecting box 1000 includes a dust-collecting box body 100 and a filter screen 300; the dust-collecting box body 100 defines a dust inlet 122, a dust receiving cavity 110 and an exhaust passage 221 which are communicated in sequence, an air inlet end 221a of the exhaust passage 221 is in communication with the dust receiving cavity 110, an air outlet end 221b of the exhaust passage 221 is arranged in pneumatic communication with a fan assembly, the filter screen 300 is arranged between the air inlet end 221a and the air outlet end 221b of the exhaust passage 221 and configured to filter the airflow entering the exhaust passage 221 from the dust receiving cavity 110, wherein the air exhaust direction of the air outlet end 221b of the exhaust passage 221 is defined as a preset reference direction t, and the filter screen 300 is arranged obliquely relative to the preset reference direction t.

The cleaning device 3000 includes a device main body 2000 and the dust-collecting box 1000, and the device main body 2000 includes an air suction opening 2100 communicated with the air outlet end 221b of the exhaust passage 221.

The material of the dust-collecting box body 100 described above may be HDPE, PP, PS and other plastic material, and may also be aluminum, steel, alloy and other metals; the dust-collecting box body 100 may be square-shaped, drum-shaped, etc., and no specific limitation is made to the material and shape of the dust-collecting box body 100 herein.

The inclination direction of the filter screen 300 may be inclined downward or upward along the preset reference direction t, or the filter screen 300 may also be inclined to the left or right; the inclination angle of the filter screen 300 relative to the preset reference direction t may be an acute angle or an obtuse angle, e.g., 15°, 30°, 35°, 45°, 50°, 55°, 80°, 120°, 140°, 170° or the like, and no specific limitation is made to the inclination direction and inclination angle of the filter screen 300 herein.

The above-mentioned filter screen 300 may be installed in the dust-collecting box body 100 in a fixed way, such as by welding, bonding, etc., or in a detachable way, such as by clamping, bolt fixing, etc., and no specific limitation is made thereto.

The dust inlet 122 described above may be arranged on the top surface of the dust-collecting box body 100 or on the side surface of the dust-collecting box body 100, and the exhaust passage 221 described above may be in various structures, the exhaust passage 221 may be formed concavely or convexly from the sidewall of the dust-collecting box body 100, or an exhaust duct with the exhaust passage 221 may be arranged on the dust-collecting box body 100, and the air outlet end 221b of the exhaust duct may also be located on the top surface or the side surface of the dust-collecting box body 1000, or located on adjacent sides or opposite sides of the dust inlet 122, and no specific limitation is made thereto.

When the cleaning device 3000 installed with the dust-collecting box 1000 works, the dust inlet 122 is in communication with the area to be cleaned and perform suction, the gas sucked passes through the dust inlet 122, the dust receiving cavity 110 and the exhaust passage 221 in sequence, and the garbage brought in by the gas is filtered by the filter screen 300 and collected into the dust receiving cavity 110.

By arranging the filter screen 300 in the dust collection box 1000 obliquely relative to the exhaust direction of the air outlet end 221b of the exhaust passage 221, the installation space of the filter screen 300 is widened, such that the upper limit of the area of the filter screen 300 is increased; and the filter screen 300 with a larger area may be adopted to improve the air flow to make the circulation of airflow smoother, thereby improving the dust collection efficiency.

Referring to FIG. 1 and FIG. 4, in an embodiment of the present application, the dust-collecting box body 100 includes a first side surface 101, a second side surface 102 opposite to the first side surface 101, and a top surface connecting the first side surface 101 and the second side surface 102, the dust inlet 122 runs through the first side surface 101, the air outlet end 221b of the exhaust passage 221 runs through the second side surface 102, and the filter screen 300 is arranged obliquely in a corner area between the second side surface 102 and the top surface. With this arrangement, when the airflow entering through the dust inlet 122 passes through the dust receiving cavity 110 and then is discharged from the exhaust passage 221, the airflow direction changes little and the airflow is smoother.

In an embodiment of the present application, the dust collection box body 100 includes a box 120 and a first cover 200; wherein the box 120 defines an open end 121 and the dust inlet 122, the first cover 200 covers the open end 121, the first cover 200 and the box 120 cooperatively defines the dust receiving cavity 110 with the dust inlet 122, the first cover 200 defines the exhaust passage 221, and the filter screen 300 is installed on the first cover 200 through the exhaust passage 221. With this arrangement, it is convenient for users to clean the inner wall of the box 120 through the open end 121 after removing the first cover 200.

The first cover 200 and the box 120 described above may be connected detachably, and as an example but not for limitation, the outer wall at the open end 121 of the box 120 defines a clamping groove, the periphery of the first cover 200 is provided with an elastic hook, and the elastic hook is clamped in the clamping groove when the first cover 200 covers the open end 121; as another example but not for limitation, a rubber sealing ring is installed on one side of the first cover 200 facing the box 120, and when the first cover 200 covers the open end 121, the rubber sealing ring elastically presses against the inner wall of the box 120.

The connection between the first cover 200 and the box 120 may also be sliding connection, and as an example but not for limitation, a yielding channel runs through a sidewall of the box 120 at the open end 121, two sliding rails are provided concavely on two inner sidewalls of the box 120 which are adjacent to the yielding channel and the open end 121, the two sliding rails extend in the same direction as the yielding channel, the first cover 200 passes through the yielding channel and cooperates with the two sliding rails, and the first cover 200 covers the open end 121 when abutting against an inner sidewall of the box 120 opposite to the yielding channel.

As another example but not for limitation, a guide groove runs through each of two opposite outer sidewalls of the box 120 at the open end 121, two opposite sides of the first cover 200 are bent to form hook plates and inserted into the guide grooves, and the hook plates slide along the guide grooves, such that the first cover 200 covers the open end 121. There are many specific connection structures between the first cover 200 and the box 120, and this will not be enumerated herein.

Referring to FIG. 9 and FIG. 10, further, in an embodiment of the present application, the first cover 200 includes the mounting recess part 220 extending to the dust receiving cavity 110, the mounting recess part 220 defines the exhaust passage 221, and the mounting recess part 220 includes a mounting plate 222 arranged at the air inlet end 221a of the exhaust passage 221, and the mounting plate 222 is obliquely arranged relative to the preset reference direction t and defines an air passing opening 223 communicating the dust receiving cavity 110 with the exhaust passage 221; the filter screen 300 is detachably installed in the mounting recess part 220 and attached to the mounting plate 222, and the filter screen 300 covers the air passing opening 223 and is configured to filter the gas flowing from the air passing opening 223 to the exhaust passage 221.

Further, the mounting recess part 220 further includes a fixed plate 229 arranged opposite to the mounting plate 222, the fixed plate 229 and the mounting plate 222 are arranged at an acute angle, and the exhaust passage 221 is defined between the fixed plate 229 and the mounting plate 222.

Through the above solution, when airflow flows through the dust-collecting box 1000, the area of the force exerted on a filter screen body 320 of the filter screen 300 by the air passing through the air passing opening 223 from the dust receiving cavity 110 and flowing into the exhaust passage 221 is small, and the influence on the connection structure between the filter screen body 320 and the mounting plate 222 is small, such that the dust-collecting box 1000 has low requirements on the connection strength and sealing between the filter screen body 320 and the mounting plate 222; in addition, the filter screen 300 is detachably mounted on the mounting plate 222, such that it is convenient to disassemble the filter screen 300 for cleaning or replacement.

Furthermore, considering that the inclination angle of the mounting plate 222 will affect the height of the filter screen body 320, and the filter screen body 320 will be buried when the garbage in the dust receiving cavity 110 reaches a certain amount, the practical garbage storage capacity of the dust receiving cavity 110 is small when the height of the filter screen body 320 is large; therefore, in an embodiment of the present application, an included angle a is formed between the filter screen 300 and the first cover 200, wherein 100°≤included angle a≤140°. The included angle a may be 100°, 110°, 116°, 134°, 140° or the like, and with this arrangement, the height of the filter screen body 320 is low, which achieves both the smoothness of the suction of airflow and the practical garbage storage capacity of the dust receiving cavity 110.

In an embodiment of the present application, the filter screen 300 is in slidably fit with the mounting recess part 220 and can be pulled away from the air outlet end 221b of the exhaust passage 221. This arrangement facilitates the disassembly and assembly of the filter screen 300.

In this embodiment, the filter screen body 320 is in slidably fit with the mounting recess part 220 in various ways, and as an example but for not limitation, the mounting recess part 220 is provided with clamping rails on two opposite sides of the cavity wall of the exhaust passage 221, and the filter screen body 320 is correspondingly provided with clamping plates; one end of the clamping plates extending into the air outlet 211 is cut with a guiding surface, and the clamping plates are inserted into the corresponding clamping rails in a sliding manner and are in interference fit with the clamping rails, such that users can take out the filter screen body 320 simply by pulling the clamping plates during the disassembly of the filter screen body 320.

As another example but not for limitation, the filter screen body 320 is provided with clamping projections on two opposite sides, the mounting recess part 220 is provided with clamping grooves on two opposite sides of the cavity wall of the exhaust passage 221, and the filter screen body 320 is inserted into the exhaust passage 221, such that the clamping projections are clamped in the clamping grooves. There are many ways of sliding fit between the filter screen body 320 and the mounting recess part 220, which will not be enumerated herein.

In an embodiment of the present application, the inner wall of the mounting recess part 220 is provided with a limiting part 226, the filter screen 300 includes a fixed bracket 310 and the filter screen body 320 fixed on the fixed bracket 310, and the fixed bracket 310 is provided thereon with a clamping part, and the clamping part is clamped with the limiting part 226. With this arrangement, the filter screen body 320 only needs to be inserted into the exhaust passage 221 until the clamping part engages with the limiting part 226, which is convenient for assembly.

The clamping part and the limiting part 226 described above have various structures, and as an example but not for limitation, the clamping part includes a spring, a clamping bead and an assembly groove recessed on the surface of the fixed bracket 310, one end of the spring is fixedly installed on the bottom wall of the assembly groove, and the other end of the spring is fixed with the clamping bead, the clamping bead is limited in the assembly groove and is partially exposed out of the assembly groove, and the spring is compressed between the clamping bead and the bottom wall of the assembly groove; the limiting part 226 includes a clamping groove recessed on the cavity wall of the exhaust passage 221, and the clamping groove is clamped with the portion of the clamping bead that is exposed outside the assembly groove.

Referring to FIG. 9 and FIG. 10, in another embodiment of the present application, an upper surface of the filter screen 300 facing away from the mounting plate 222 is spaced apart from the fixed plate 229, and the dust-collecting box body 100 further includes a fixed bracket 310, the fixed bracket 310 is detachably installed in the space between the filter screen 300 and the fixed plate 229, and two opposite sides of the fixed bracket 310 are respectively fixed against the filter screen 300 and the fixed plate 229.

In this embodiment, the fixed bracket 310 and the filter screen 300 are independent from each other, and the filter screen 300 is fixed against the fixed bracket 310, such that it can be ensured that the filter screen 300 is stably and fixedly attached to the mounting plate 222, thereby avoiding the filter screen 300 from shaking. When it is necessary to separate the filter screen 300 from the mounting recess part 220, the fixed bracket 310 may be pulled out from the air outlet end 221b of the exhaust passage 221 first, such that the pressure of the fixed bracket 310 on the filter screen 300 is released, and the user may further pull out the filter screen 300 from the air outlet end 221b of the exhaust passage 221. The fixed bracket 310 includes a bracket main body 311 and an operating part 315 connected with the bracket main body 311, the shape of the bracket main body 311 is roughly the same as that of the filter screen 300, and the bracket main body 311 is configured to press the filter screen 300 as a whole to ensure that the filter screen 300 is closely attached to the mounting plate 222, thereby avoiding the occurrence of a gap between the filter screen 300 and the mounting plate 222. The number of the operating part 315 may be one or more than two. The one or more than two operating parts 231 abut against the surface of the fixed plate 229 to ensure that the fixed bracket 310 press the filter screen 300 as a whole. The user may grasp the operation part 315 by hand, and then pull out the fixed bracket 310 from the air outlet end 221b of the exhaust passage 221.

Referring to FIG. 2, FIG. 4, FIG. 6 and FIG. 7, in an embodiment of the present application, the fixed bracket 310 includes a bracket main body 311 and two side plates 312 respectively connected to two opposite sides of the bracket main body 311, and the clamping part is an elastic buckle formed on one side of each side plate 312 far away from the bracket main body 311; the mounting recess part 220 includes side panels 224 respectively connected to two opposite sides of the mounting plate 222, a guide rail 225 extends in the depth direction of the exhaust passage 221 and is mounted on each side panel 224, the limiting part 226 is a limiting groove 227 defined on the guide rail 225, each side plates 312 is slidable between the guide rail 225 and the mounting plate 222, such that the elastic buckle is clamped into the limiting groove 227. With such arrangement, the guide rail 225 can support the filter screen body 320 during the operation of the dust-collecting box 1000, so as to avoid the dislocation of the filter screen body 320 with respect to the air passing opening 223 under the influence of wind, and also avoid the problem that the filter screen body 320 is loosened or even detached from the mounting recess part 220 due to the vibration caused by airflow when the dust-collecting box 1000 is in use; the connection strength between the filter screen body 320 and the mounting recess part 220 is high, the structure is stable, and the air tightness between the fixed bracket 310 and the cavity wall of the exhaust passage 221 is good.

Generally, the bracket main body 311 and the two side plates 312 are integrally formed with each other, the side panel 224 and the mounting plate 222 are integrally formed with each other; of course, they may also be connected by welding, bolt fixing, detachable connection or the like, and no specific limitation is made thereto.

Further, considering that both the bracket main body 311 and the side plates 312 are close to the cavity wall of the exhaust passage 221, which is not convenient for the user to exert force, in order to facilitate the manual disassembly by the user, in an embodiment of the present application, the fixed bracket 310 further includes an operating plate 315 connected with the bracket main body 311, and the operating plate 315 is located between the two side plates 312; and by exerting a force to the operating plate 315, the filter screen body 320 can be pulled away from the air outlet 211. Specifically, the user can pinch the operating plate 315 with two fingers or by using pliers, which is convenient for exerting a force.

In an embodiment of the present application, the mounting recess part 220 further includes a fixed plate 229, the fixed plate 229 is arranged opposite to the bracket main body 311, two side edges thereof are respectively connected with the two side panels 224, and one side of the operating plate 315 far away from the bracket main body 311 is slidably in contact with the fixed plate 229. With this arrangement, the operating plate 315 supports between the fixed plate 229 and the bracket main body 311, which avoids the problem that the bracket main body 311 is slightly deformed at the middle position of the two side plates 312 due to the influence of wind, such that the bracket main body 311 drives the side plates 312 to vibrate together, and the overall structure of the mounting recess part 220 and the filter screen body 320 is more stable.

The connection of the fixed plate 229, the side panel 224 and the mounting plate 222 is generally achieved by being formed integrally, so as to avoid air leakage at the joints of the fixed plate 229 and the two side panels 224 as well as at the joints of the two side panels 224 and the mounting plate 222, and the air tightness is good; of course, these components may also be connected by welding, bolt fixing and detachable connection or the like, and no specific limitation is made thereto.

Referring to FIG. 3, in an embodiment of the present application, the first cover 200 can be turned around relative to the box 120 to open the open end 121. With this arrangement, it is more convenient for the first cover 200 to be closed without the need of alignment.

In this embodiment, the first cover 200 and the box 120 are connected in various ways, and as an example but not for limitation, one side of the first cover 200 and one side of the box 120 at the open end 121 are connected by hinges; in an embodiment of the present application, one side of the first cover 200 is rotatably connected with the box 120 through a pivoting shaft 213, the other side of the first cover 200 is clamped with the box 120, and the first cover 200 can rotate around the pivoting shaft 213 to open or cover the open end 121. With this arrangement, the structure is simple and the cost is low.

One side of the first cover 200 is rotatably connected with the box 120 through the pivoting shaft 213 in various way, and as an example but not for limitation, one side of the first cover 200 is provided with a first buckle, the first buckle is formed with a clamping position, the pivoting shaft 213 is correspondingly positioned on the outer wall of the box 120 and clamped in the clamping position, and the first cover 200 can rotate around the pivoting shaft 213 to open or close the box 120; as another example but not for limitation, a sleeve is fixed on the outer wall of the box 120, one side of the first cover 200 is fixed with part of the pivoting shaft 213, and the remaining part of the pivoting shaft 213 is rotatably installed in the sleeve. One side of the first cover 200 may also be rotatably connected with the box 120 through the pivoting shaft 213 in many other ways, and this will not be enumerated herein.

In this embodiment, the first cover 200 is covered and fixed on the box 120 in various ways, and as an example but not for limitation, one outer sidewall of the box 120 opposite to the pivoting shaft 213 is concave to form a docking groove, the bottom of the docking groove is installed with a magnetic piece, the first cover 200 further includes a rotating plate rotatably connected to one side of the first cover 200 opposite to the first buckle, the rotating plate can rotate relative to the first cover 200 and be attached to one side of the box 120 defining the docking groove, an iron piece is fixed on the rotating plate, and the iron piece extends into the docking groove and is attracted with the magnetic piece. With this arrangement, the first cover 200 can be opened only after the rotating plate is opened first to separate the iron piece from the docking groove, thereby preventing the first cover 200 from being opened by accident.

In an embodiment of the present application, one outer sidewall of the box 120 opposite to the pivoting shaft 213 is further provided with a buckle position, one side of the first cover 200 opposite to the first buckle is further provided with a second buckle 314, and the second buckle 314 is elastically clamped with the buckle position. With this arrangement, the first cover 200 is released from clamping simply by pressing the second buckle 314 and making it withdraw from the buckle position, such that the first cover 200 is opened, and the first cover 200 can be closed conveniently simply by directly closing the first cover 200 and clamping the second buckle to the buckle position.

Furthermore, it is inconvenient for users to manually discharge the dust, because the user needs to remove the dust-collecting box 1000 from the cleaning device 3000, and then open the dust-collecting box 1000 for cleaning; in view of this, in an embodiment of the present application, the first cover 200 further defines a dust discharging opening 212, which is located below the air outlet 211. With this arrangement, the dust discharging opening 212 may be in communication with a suction device, such that the garbage in the dust receiving cavity 110 can be pumped out, and the user does not need to open the dust-collecting box 1000 for cleaning, or the user only needs to clean the stubborn stains in the dust receiving cavity 110 regularly, which greatly reduces the cleaning frequency of the dust-collecting box 1000 and provides better user experience.

Furthermore, referring to FIG. 2 to FIG. 5 and FIG. 8, in an embodiment of the present application, the box 120 includes a main body and a second cover 130, two opposite sidewalls of the main body respectively define the dust inlet 122 and the open end 121, the top portion of the main body further defines a mounting opening 123, and the second cover 130 is connected with the main body and covers the mounting opening 123. With this arrangement, the dust-collecting box 1000 is more modularized, which facilitates the separate processing and manufacturing of each component and provides higher production efficiency.

The way in which the second cover 130 covers the mounting opening 123 is similar to the way in which the first cover 200 covers the open end 121, the second cover 130 may also cover the mounting opening 123 by sliding connection, rotating connection and detachable connection or the like between the second cover 130 and the main body; as an example but not for limitation, the main body defines an insertion slot on the outer periphery of the mounting opening 123, and one side of the second cover 130 is correspondingly provided with an insertion plate which is inserted into the insertion slot; as another example but not for limitation, one side of the second cover 130 is glued to the main body, so as to cover the mounting opening 123. There are many other ways for the second cover 130 to be connected with the main body and cover the mounting opening 123, and this will not be enumerated herein.

Furthermore, in an embodiment of the present application, the mounting recess part 220 extends towards the second cover 130, and the inner surface of the second cover 130 is further convexly provided with a dust blocking board 131, and the dust blocking board 131 covers the gap between the second cover 130 and the mounting recess part 220. With this arrangement, problems such as the growth of bacteria over time and the generation of peculiar smell due to the accumulation of garbage in the gap between the second cover 130 and the mounting recess part 220 can be avoided.

Referring to FIG. 1, as an example but not for limitation, the cleaning device 3000 is a cleaning robot, the cleaning robot further includes a roller brush installed on the device main body 2000 to brush the ground, and the dust inlet 122 faces the roller brush. With this arrangement, the roller brush can sweep the stubborn stains on the ground, such that the stains are collected by the device main body 2000 and the dust-collecting box 1000, and thus the cleaning effect is better.

As another example but not for limitation, the cleaning device 3000 is a cleaning base station used in cooperation with a cleaning robot, the device main body 2000 is provided with a cleaning space for the cleaning robot to enter, and the dust inlet 122 is in communication with the cleaning space. With this arrangement, the cleaning base station can collect dust from the cleaning robot entering the cleaning space and clean the cleaning robot, so as to recycle the garbage collected by the cleaning robot or the dust carried on the body of the cleaning robot.

What described above are only the exemplary embodiments of the present application, but are not intended to limit the scope of the present application; any equivalent structures or equivalent process flow modifications that are made according to the specification and the attached drawings of the present application, or any direct or indirect applications of the present application in other related technical fields shall all be covered within the protective scope of the present application.

Claims

1. A dust-collecting box, comprising: a dust-collecting box body, the dust-collecting box body defining a dust inlet, a dust receiving cavity and an exhaust passage which are communicated in sequence, an air inlet end of the exhaust passage being in communication with the dust receiving cavity, and an air outlet end of the exhaust passage configured to be in pneumatic communication with a fan assembly; anda filter screen, the filter screen arranged between the air inlet end and the air outlet end, the filter screen configured to filter an airflow entering the exhaust passage from the dust receiving cavity, an exhaust direction of the air outlet end defined as a preset reference direction, and the filter screen arranged obliquely relative to the preset reference direction.

2. The dust-collecting box of claim 1, wherein the dust-collecting box body comprises a first side surface, a second side surface opposite to the first side surface, and a top surface connecting the first side surface and the second side surface, the dust inlet is arranged through the first side surface, the air outlet end is arranged through the second side surface, and the filter screen is arranged obliquely in a corner area between the second side surface and the top surface.

3. The dust-collecting box of claim 1, wherein the dust-collecting box body comprises a box and a first cover; the box defines an open end and the dust inlet, the first cover covers the open end, the first cover and the box cooperatively define the dust receiving cavity, the first cover defines the exhaust passage, and the filter screen is installed on the first cover via the exhaust passage.

4. The dust-collecting box of claim 3, wherein the first cover comprises a mounting recess part extending to the dust receiving cavity, the mounting recess part defines the exhaust passage, the mounting recess part comprises a mounting plate arranged at the air inlet end, the mounting plate is obliquely arranged relative to the preset reference direction, and the mounting plate defines an air passing opening that is in communication with the dust receiving cavity and the exhaust passage; the filter screen is detachably installed in the mounting recess part and attached to the mounting plate, and the filter screen covers the air passing opening to filter the airflow flowing from the air passing opening to the exhaust passage.

5. The dust-collecting box of claim 4, wherein an included angle a is formed by the filter screen and the first cover, where 100°≤included angle a≤140°.

6. The dust-collecting box of claim 4, wherein the filter screen is in sliding fit with the mounting recess part and is capable of being pulled away from the air outlet end.

7. The dust-collecting box of claim 4, wherein an inner wall of the mounting recess part defines a limiting part, the filter screen comprises a fixed bracket and a filter screen body positioned on the fixed bracket, and the fixed bracket comprises a clamping part which is clamped with the limiting part.

8. The dust-collecting box of claim 7, wherein the fixed bracket comprises a bracket main body and two side plates respectively connected to two opposite sides of the bracket main body, and the clamping part is an elastic buckle formed on one side of each side plate far away from the bracket main body; the mounting recess part comprises side panels respectively connected to two opposite sides of the mounting plate, a guide rail extending in a depth direction of the exhaust passage is mounted on each side panel, the limiting part is a limiting groove defined on the guide rail, and each side plate is capable of sliding between the guide rail and the mounting plate, such that the elastic buckle is clamped into the limiting groove.

9. The dust-collecting box of claim 8, wherein the fixed bracket further comprises an operating plate connected with the bracket main body, and the operating plate is located between the two side plates; the filter screen is capable of being pulled away from the air outlet end by applying a force to the operating plate.

10. The dust-collecting box of claim 9, wherein the mounting recess part further comprises a fixed plate, the fixed plate is arranged opposite to the bracket main body, and two side edges of the fixed plate are respectively connected with the two side panels, and one side of the operating plate far away from the bracket main body is in sliding contact with the fixed plate.

11. The dust-collecting box of claim 4, wherein the box comprises a main body and a second cover, the dust inlet and the open end are respectively located on two opposite sidewalls of the main body, the second cover is positioned on a top portion of the main body, the second cover comprises a dust blocking board, and the dust blocking board is convexly positioned on an inner surface of the second cove and covers a gap between the second cover and the mounting recess part.

12. The dust-collecting box of claim 11, wherein the top portion of the main body defines a mounting opening, the main body further defines an insertion slot on an outer periphery of the mounting opening, the second cover comprises an insertion plate on one side thereof, and the insertion plate is inserted into the insertion slot.

13. The dust-collecting box of claim 4, wherein the mounting recess part further comprises a fixed plate arranged opposite to the mounting plate, the fixed plate and the mounting plate are arranged at an acute angle, and the exhaust passage is formed between the fixed plate and the mounting plate.

14. The dust-collecting box of claim 13, wherein an upper surface of the filter screen facing away from the mounting plate is spaced apart from the fixed plate, and the dust-collecting box body further comprises a fixed bracket detachably installed in the space between the filter screen and the fixed plate, and two opposite sides of the fixed bracket are respectively fixed against the filter screen and the fixed plate.

15. The dust-collecting box of claim 3, wherein the first cover further defines a dust discharging opening, and the dust discharging opening is located below the air outlet end.

16. The dust-collecting box of claim 3, further comprising a pivoting shaft, wherein the first cover is rotatably connected with the box through the pivoting shaft, the first cover is clamped with the box, and the first cover is capable of rotating around the pivoting shaft to open or cover the open end.

17. The dust-collecting box of claim 16, wherein the first cover comprises a first buckle, the first buckle is positioned on one side of the first cover, the first buckle is formed with a clamping position, and the pivoting shaft is positioned on an outer wall of the box and clamped in the clamping position.

18. The dust-collecting box of claim 17, wherein the box comprises a buckle position positioned on one outer sidewall of the box opposite to the pivoting shaft, the first cover comprises a second buckle positioned on another side of the first cover opposite to the first buckle, and the second buckle is elastically clamped with the buckle position.

19. The dust-collecting box of claim 14, wherein the fixed bracket comprises a bracket main body and an operating part connected with the bracket main body, and the bracket main body is configured to press the filter screen as a whole to ensure that the filter screen is closely attached to the mounting plate, the operating parts abut against a surface of the fixed plate to ensure that the fixed bracket press the filter screen as a whole.

20. A cleaning device, comprising a device main body and the dust-collecting box of claim 1, wherein the device main body defines an air suction opening communicated with the air outlet end.