Sweeper dust box and sweeping robot
By designing the first surface of the arc-shaped convex surface and the second surface of the plane in the sweeping dust box, the problem of low space utilization of the existing sweeping dust box is solved, and the effect of uniform accumulation of dust in the dust box and the sides is achieved, improving the space utilization and user experience.
Patent Information
- Application Number
- CN202420926808.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-29
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-04-29
AI Technical Summary
The existing dust box of sweeping machines has low space utilization, and garbage is easily accumulated in the sea parcel in front of the fan suction port, resulting in the dust box that needs to be cleaned frequently, affecting the user experience.
A sweeping machine dust box is designed, with a first surface with an arc-shaped convex surface and a second surface of a plane. Through the dispersion of air flow and the diffusion of dust, dust can not only accumulate in the middle of the dust box, but also on the sides, increasing the space utilization rate of the dust box.
Through the design of arc-shaped convex surfaces, the dust entry efficiency and accumulation area are improved, which greatly improves the space utilization of the dust box, reduces the cleaning frequency and improves the user experience.
Smart Images
Figure CN222751959U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of household appliances, and more specifically, to a sweeping machine dust box and a sweeping robot. Background Art
[0002] With the continuous development of science and technology, sweeping robots are increasingly used in household chores. And with the continuous development of sweeping robot technology, the requirements for cleaning effects are gradually increasing. Sweeping robots need to meet the cleaning needs of large areas.
[0003] However, on the one hand, the dust box is not large due to the size of the space of the sweeper. Secondly, garbage is easily accumulated in the sea area in front of the fan suction port, resulting in low utilization of the dust box. Therefore, after dust collection, the dust box needs to be cleaned frequently, affecting the user experience. Utility Model Content
[0004] The present application provides a sweeping machine dust box and a sweeping robot, which improve the space utilization rate of the dust box body.
[0005] Specifically, the present application is implemented through the following technical solutions:
[0006] One aspect of the present application provides a dust box for a sweeping machine, comprising:
[0007] A dust box body, with a collection cavity formed inside, the dust box body is also provided with a dust suction port and an air exhaust port communicated with the collection cavity, the dust suction port and the air exhaust port being arranged opposite to each other;
[0008] A first dust shield is arranged in the collecting chamber, and the first dust shield is connected to the dust box body. In a direction perpendicular to the dust suction port and the air exhaust port, the first dust shield is provided with a first surface and a second surface facing away from each other. On the side facing by the first surface, a partial area of the dust suction port is opposite to and connected to a partial area of the air exhaust port, and on the side facing by the second surface, a partial area of the dust suction port is opposite to and connected to a partial area of the air exhaust port, and the first surface is an arc-shaped convex surface.
[0009] Optionally, the first dust shield may be movably connected to the dust box body, and the first dust shield is configured to change the size of the space facing the first surface and the size of the space facing the second surface when the first dust shield moves relative to the dust box body.
[0010] Optionally, the first dust shield is rotatably connected to the dust box body, and the rotation axis direction of the first dust shield is consistent with the relative direction of the dust suction port and the air exhaust port.
[0011] Optionally, the dust box body also includes a first limiting portion, which is arranged in the collecting chamber, and the first dust barrier sheet includes a first rotating end rotatably connected to the dust box body and a first free end freely arranged, and the first limiting portion is arranged to be able to abut against the first surface of the first free end when the first dust barrier sheet rotates.
[0012] Optionally, when the first surface is against the first limiting portion, in a direction perpendicular to the dust suction port and relative to the air outlet, the first rotating end is farther away from the center of the dust suction port than the first free end.
[0013] Optionally, the dust box of the sweeping machine also includes a second dust baffle plate arranged in the collecting chamber and connected to the dust box body, the second dust baffle plate and the first dust baffle plate are arranged side by side in a direction perpendicular to the dust suction port and opposite to the air exhaust port, and the second dust baffle plate is provided with a third surface and a fourth surface facing away from each other in this direction, on the side facing the third surface, a partial area of the dust suction port is opposite to and connected to a partial area of the air exhaust port, and on the side facing the fourth surface, a partial area of the dust suction port is opposite to and connected to a partial area of the air exhaust port, the second surface is opposite to the third surface, the first surface is arranged on the side of the first dust baffle plate facing away from the second dust baffle plate, the fourth surface is arranged on the side of the second dust baffle plate facing away from the first dust baffle plate, and the fourth surface is an arc-shaped convex surface.
[0014] Optionally, the second dust shield may be movably connected to the dust box body, and the second dust shield is configured to change the size of the space facing the third surface and the size of the space facing the fourth surface when the second dust shield moves relative to the dust box body.
[0015] Optionally, the second dust shield is rotatably connected to the dust box body, and the rotation axis direction of the second dust shield is consistent with the relative direction of the dust suction port and the air exhaust port.
[0016] Optionally, the dust box body also includes a second limiting portion, which is arranged in the collecting chamber, and the second dust barrier includes a second rotating end rotatably connected to the dust box body, and a freely arranged second free end, and the second limiting portion is arranged to abut against a fourth surface of the second free end when the second dust barrier rotates.
[0017] Optionally, when the fourth surface abuts against the second limiting portion, in a direction perpendicular to the dust suction port and relative to the air outlet, the second rotating end is farther away from the center of the dust suction port than the second free end.
[0018] Another aspect of the present application provides a sweeping robot, comprising the sweeping robot dust box described in any one of the above items.
[0019] The present application provides a sweeping machine dust box and a sweeping robot. Since the first surface is an arc-shaped convex surface, the airflow will flow along the first surface, and will change the flow direction after colliding with the first surface, and disperse to the side facing the first surface, so that the dust carried in the airflow is also dispersed and reaches the area facing the first surface. And since the first surface is an arc-shaped convex surface, the wind speed passing through the first surface is high, and the pressure of the area facing the first surface is low, the dust can enter the area facing the first surface more and reach one side of the dust box body, and the wind carrying dust is guided to the area on one side of the dust box body, so that the dust is not only accumulated in the middle of the dust box, but also accumulated on the side of the dust box, thereby increasing the space utilization rate of the dust box body. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 is a schematic diagram of the internal structure of a dust box of a sweeping machine shown in an exemplary embodiment of the present application;
[0021] Figure 2 is a front view of a dust box of a sweeping machine shown in an exemplary embodiment of the present application;
[0022] Figure 3 is a schematic diagram of the back of a dust box of a sweeping machine shown in an exemplary embodiment of the present application;
[0023] Figure 4 is a schematic diagram of the wind path of a sweeping robot shown in an exemplary embodiment of the present application;
[0024] Figure 5 It is a schematic diagram of the bottom of a sweeping robot shown in an exemplary embodiment of the present application. DETAILED DESCRIPTION
[0025] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application.
[0026] The terms used in this application are only for the purpose of describing specific embodiments, and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one" or "one" do not indicate quantity restrictions, but indicate that there is at least one, and will be separately described if only "one" is referred to. "Multiple" or "several" means two or more. Unless otherwise specified, similar words such as "front", "rear", "lower" and / or "upper", "top", "bottom" are only for the convenience of explanation, and are not limited to one position or one spatial orientation. Similar words such as "include" or "comprise" mean that the elements or objects appearing in front of "include" or "comprise" cover the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. The words "connected" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
[0027] The dust suction port and the air exhaust port of the dust box of the currently used sweeping robot are opposite to each other and are located in the middle of the dust box, causing garbage to accumulate in a straight path between the dust suction port and the air exhaust port, that is, in the middle of the dust box, and the space on both sides of the dust box cannot be used, resulting in low space utilization of the dust box.
[0028] Based on the above questions, please refer to Figure 1 The present application provides a dust box for a sweeping machine, including a dust box body 100 and a first dust shield 200. A collecting chamber 101 is formed inside the dust box body 100. Figure 2 and Figure 3 The dust box body 100 is also provided with a dust suction port 110 and an air outlet 120 connected to the collection chamber 101. The air outlet 120 is used to connect with the fan. When the fan is running, negative pressure is formed in the collection chamber, and external dust and other debris are sucked into the dust suction port 110. The dust suction port 110 and the air outlet 120 are arranged opposite to each other, and the relative direction is represented by the first direction X. The first dust shield 200 is arranged in the collection chamber 101, and the first dust shield 200 is connected to the dust box body 100, and the connection method can be fixed connection or movable connection.
[0029] In a direction perpendicular to the dust suction port 110 and the air outlet, that is, a direction perpendicular to the first direction X, in the figure, and hereinafter represented by the second direction Y, the first dust shield 200 has a first surface 210 and a second surface 220 facing away from each other, and on the side facing the first surface 210, a partial area of the dust suction port 110 is opposite to and connected to a partial area of the air outlet 120, that is, part of the dust suction port 110 is connected to part of the air outlet 120. On the side facing the second surface 220, a partial area of the dust suction port 110 is opposite to and connected to a partial area of the air outlet 120. In other words, the first dust shield 200 divides the collection chamber 101 into an area facing the first surface 210 and an area facing the second surface 220, and on both sides of the first dust shield 200, the dust suction port 110 is connected to the air outlet 120. Among them, the first surface 210 is an arc-shaped convex surface.
[0030] According to the above description, it can be known that the dust sucked into the collection chamber 101 through the dust suction port 110 will mostly be directly sucked into the exhaust port 120 from the dust suction port 110 along the shortest path. However, as the dust accumulates more and more at the exhaust port 120, the resistance at the exhaust port 120 gradually increases. At this time, under the action of the negative pressure formed at the exhaust port 120, the dust will be sucked into the exhaust port 120 along other paths. For example, when the air flow carrying dust flows toward the first surface 210, since the first surface 210 is an arc-shaped convex surface, the air flow will flow along the first surface 210, and will change its flow direction after colliding with the first surface 210, and disperse to the side facing the first surface 210, so that the dust carried in the air flow is also dispersed and reaches the area facing the first surface 210. The area facing the first surface 210 is actually an area on one side of the dust box body 100, that is, the dust can reach an area on one side of the dust box body 100 and accumulate there.
[0031] Furthermore, since the first surface 210 is an arc-shaped convex surface, when the airflow passes through the first surface 210 from the dust suction port 110 to the air outlet 120, the airflow has to pass through a longer path when passing through the arc-shaped convex first surface 210, compared with the airflow flowing in a straight line to the air outlet 120. Therefore, the wind speed passing through the first surface 210 is high, and the pressure in the area facing the first surface 210 is low, so that more dust can enter the area facing the first surface 210 and reach one side of the dust box body 100. In this embodiment, the dust-carrying airflow is guided to one side of the dust box body 100 through the design of the shape of the first surface 210, so that the dust is not only accumulated in the middle of the dust box, but also accumulated on the side of the dust box, thereby increasing the space utilization rate of the dust box body.
[0032] In this embodiment, the second surface 220 is set to be a plane, and the second surface can reduce the path of the airflow when it flows through the second surface 220.
[0033] In one embodiment, the first dust shield 200 is movably connected to the dust box body 100, and the first dust shield 200 is configured to change the size of the space facing the first surface 210 and the size of the space facing the second surface 220 when the first dust shield 200 moves relative to the dust box body 100. It can also be understood that the movement of the first dust shield 200 can change the size of the space on both sides along the second direction Y. The movement can be sliding or rotating. For example, one end of the first dust shield 200 is slidably connected to the dust box body 100, and the sliding direction is the second direction Y. For another example, one end of the first dust shield 200 is rotatably connected to the dust box body 100, and the direction of the rotation axis is the first direction X. In this way, when the pressure on both sides of the first dust shield 200 is different, the first dust shield 200 will automatically adjust its position under the action of the pressure difference. For example, when the air volume entering the first surface 210 and the second surface 220 from the dust suction port 110 is roughly the same, under the action of the arc-shaped convex surface of the first surface 210, when the wind speed of the first surface 210 passing through the first dust shield 200 is greater than the wind speed passing through the second surface 220, due to the principle that the pressure in the area with high wind speed is small, the first dust shield 200 will move toward the area facing the first surface 210, thereby reducing the area facing the first surface 210. For another example, when the air volume entering the second surface 220 side from the dust suction port 110 is greater than the air volume entering the first surface 210 side, since the wind speed of the second surface 220 is greater than the wind speed passing through the first surface 210, the first dust shield 200 will move toward the area facing the second surface 220, reducing the space in this area. In this embodiment, the first dust barrier 200 utilizes the pressure difference between the first surface 210 and the second surface 220 to move the first dust barrier 200, thereby adjusting the space on both sides of the first dust barrier 200 in the second direction Y, increasing the dust carrying capacity in the collection chamber 101, and further increasing the utilization rate of the dust box body.
[0034] In one embodiment, the first dust shield 200 is rotatably connected to the dust box body 100, and the first dust shield 200 rotates along a rotation axis parallel to the first direction X. The position of the rotation axis does not exceed any end of the dust suction port 110 in the second direction Y. During the rotation process, the first dust shield 200 can change the size of the space on both sides in the second direction Y. The rotation connection method can be that the first dust shield 200 is suspended on the top of the dust box body 100, and can be connected by a hook or a movable shaft. The rotation connection method has a simple structure, and has small friction and resistance during the activity, and is more flexible.
[0035] In one embodiment, the dust box body 100 further includes a first limiting portion 131, which is disposed in the collection chamber 101. The first dust shield 200 includes a first rotating end 201 rotatably connected to the dust box body 100, and a freely disposed first free end 202. During the rotation of the first dust shield 200, the first surface 210 of the first free end 202 can abut against the first limiting portion 131 to limit the rotation angle of the first free end 202. The first limiting portion 131 can be a boss disposed in the dust box body 100, and the first free end 202 abuts against the boss.
[0036] The first surface 210 can be offset relative to the center of the dust suction port 110. When the wind speed of the first surface 210 is greater than the wind speed of the second surface 220, the first free end 202 of the first dust shield 200 will deflect toward the first surface 210 along the second direction Y. If the first free end 202 is rotated unrestrictedly toward the side away from the center of the dust suction port 110, the area facing the first surface 210 will be reduced. In order to avoid excessive reduction of the area, the first limiting portion 131 is provided in this embodiment to ensure that the area facing the first surface 210 is connected to the dust suction port 110, thereby ensuring smooth diffusion of dust.
[0037] In one embodiment, when the first surface 210 is against the first limiting portion 131, in a direction perpendicular to the dust suction port 110 and the air outlet 120, that is, in the second direction Y, the first rotating end 201 is farther away from the center of the dust suction port 110 than the first free end 202. At this time, the first dust shield 200 is inclined and forms an acute angle α with the vertical direction. In this way, it can be ensured that the air intake area of the dust suction port 110 connected to the area facing the first surface 210 is larger, so that the air volume entering the area facing the first surface 210 is larger, and more dust is accumulated at the edge of the dust box body 100.
[0038] In one embodiment, the dust box body 100 is further connected with a second dust shield 300, which is arranged in the collection chamber 101, and the second dust shield 300 is arranged opposite to the first dust shield 200. In a direction perpendicular to the dust suction port 110 and the air outlet 120, that is, in the second direction Y, the second dust shield 300 is arranged side by side with the first dust shield 200, and the second dust shield 300 is provided with a third surface 310 and a fourth surface 320 facing away from each other in this direction, and on the side facing the third surface 310, a part of the dust suction port 110 is opposite to and connected to a part of the air outlet 120, and on the side facing the fourth surface 320, a part of the dust suction port 110 is opposite to and connected to a part of the air outlet 120. The second surface 220 is opposite to the third surface 310. The first surface 210 is provided on the side of the first dust shield 200 facing away from the second dust shield, and the fourth surface 320 is provided on the side of the second dust shield 300 facing away from the first dust shield 200. The fourth surface 320 is an arc-shaped convex surface. The first dust shield 200 and the second dust shield 300 divide the collection chamber 101 into three areas, namely, the area on the side of the first surface 210 facing the collection chamber 101, the area between the first dust shield 200 and the second dust shield 300, and the area facing the fourth surface 320. The first surface 210 and the fourth surface 320 are both facing the two sides of the dust box body 100, and are both arc-shaped convex surfaces. The principle is the same as described above. The dust carried by the airflow can be dispersed and reach the area facing the fourth surface 320. The dust box structure in this embodiment allows the wind with dust to blow to the two sides of the dust box body, so that the dust can be accumulated on both sides of the dust box, further improving the space utilization rate of the dust box body 100. The third surface 310 may also be set to be a plane, and the third surface 310 may reduce the path of the airflow flowing through the third surface 310 .
[0039] In one embodiment, the second dust shield 300 is movably connected to the dust box body 100, and the second dust shield 300 is configured to change the size of the space facing the third surface 310 and the size of the space facing the fourth surface 320 when the second dust shield 300 moves relative to the dust box body 100. That is, the size of the space on both sides of the second dust shield 300 in the second direction Y. At this time, the space between the first dust shield 200 and the second dust shield 300 is compressed, and the airflow diffuses to the edge of the box body 100, which is beneficial to the utilization rate of the internal space of the box body 100. The movable connection method of the second dust shield 300 and the dust box body 100 can refer to the movable connection method of the first dust shield 200 and the dust box body 100, which will not be repeated here.
[0040] And please refer to Figure 4 and Figure 5, the fan 6 is connected to the dust box body 100 through the fan air inlet 5 and the air outlet 120. Under the action of the negative pressure generated by the fan 6, the external air and the dry dust on the ground are sucked in at the roller brush port 4, and enter the dust box body 100 through the dust suction port 110. After being blocked by the filter at the air outlet 120, the dust is retained inside the dust box body 100. After passing through the filter at the air outlet 120, the airflow enters the fan air inlet 5, enters the fan 6, and finally flows out from the exhaust duct 7 after being expanded. The area between the first dust shield 200 and the second dust shield 300 faces the dust suction port 110 and the air outlet 120, and the fan 6 faces the middle of the air outlet 120.
[0041] In the early stage of dust collection, when there is not much dust in the dust box body 100, since the fan 6 is facing the middle area between the first dust shield 200 and the second dust shield 300, the wind volume in this area is large and the wind speed is fast. The first dust shield 200 and the second dust shield 300 will move in opposite directions under the action of the pressure difference on both sides thereof, that is, move toward the central area of the dust suction port 110. The first dust shield 200 and the second dust shield 300 move towards each other, firstly, the dust in the middle area can be compressed to increase the dust carrying capacity, and secondly, the air intake area of the area facing the first surface 210 and the area facing the fourth surface 320, which are connected to the dust suction port 110, can be increased.
[0042] In the later stage of dust collection, more and more dust accumulates at the air outlet 120, the resistance at the air outlet 120 gradually increases, and the wind speed in the middle area between the first dust shield 200 and the second dust shield 300 decreases. Taking the first dust shield 200 as an example, the wind speed blowing to the first surface 210 and the second surface 220 is the same. At this time, affected by the arc shape of the first surface 210, the wind speed passing through the first surface is high, and more dust can enter the area facing the first surface 210. The second dust shield 300 is similar. During the entire dust collection process, the dust can be fully dispersed in the middle and both sides of the dust box.
[0043] In one embodiment, the second dust shield 300 is rotatably connected to the dust box body 100, and the rotation axis direction of the second dust shield 300 is consistent with the relative direction of the dust suction port 110 and the exhaust port 120. The rotation connection method can be consistent with the first dust shield 200, and can be connected through a hook or a movable shaft. The rotation connection method has a simple structure, and has low friction and resistance during the activity, and is more flexible.
[0044] In one embodiment, the dust box body further includes a second limiting portion 132, which is disposed in the collection chamber 101. The second dust shield 300 includes a second rotating end 301 rotatably connected to the dust box body 100, and a second free end 302 disposed freely. During the rotation of the second dust shield 300, the fourth surface 320 of the second free end 302 can abut against the second limiting portion 132 to limit the rotation angle of the second free end 302. The second limiting portion 132 can be disposed opposite to the first limiting portion 131, and the second limiting portion 132 can be a boss disposed in the dust box body 100, and the second free end 302 abuts against the boss. Similar to the first limiting portion 131, this embodiment can ensure that the area facing the fourth surface 320 is connected to the dust suction port 110, thereby ensuring the smooth diffusion of dust.
[0045] In one embodiment, when the fourth surface 320 abuts against the second limiting portion 132, in a direction perpendicular to the dust suction port 110 and the air outlet 120, the second free end 302 of the second rotating end 30 is further away from the center of the dust suction port 110. Similar to the first dust shield 200, the second dust shield 300 is inclined and substantially forms an acute angle α with the vertical direction. This ensures that the air intake area of the dust suction port 110 connected to the area facing the fourth surface 320 is larger, so that the air volume entering the area facing the fourth surface 320 is larger, and more dust is accumulated at the edge of the dust box body 100.
[0046] The present application also proposes a sweeping robot, which can be a stand-alone sweeping robot or a sweeping robot with a base station, a sweeping robot with flat-plate vibration mopping and rotary pressurized mopping, etc., including the sweeping robot dust box described in any of the above embodiments.
[0047] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.
Claims
1. A dust box for a sweeping machine, characterized in that: include: A dust box body, with a collection cavity formed inside, the dust box body is also provided with a dust suction port and an air exhaust port communicated with the collection cavity, the dust suction port and the air exhaust port being arranged opposite to each other; A first dust shield is arranged in the collecting chamber, and the first dust shield is connected to the dust box body. In a direction perpendicular to the dust suction port and the air exhaust port, the first dust shield is provided with a first surface and a second surface facing away from each other. On the side facing by the first surface, a partial area of the dust suction port is opposite to and connected to a partial area of the air exhaust port, and on the side facing by the second surface, a partial area of the dust suction port is opposite to and connected to a partial area of the air exhaust port, and the first surface is an arc-shaped convex surface.
2. The dust box of the sweeping machine according to claim 1, characterized in that: The first dust shield is movably connected to the dust box body, and is configured to change the size of the space facing the first surface and the size of the space facing the second surface when the first dust shield moves relative to the dust box body.
3. The dust box of the sweeping machine according to claim 2, characterized in that: The first dust shield is rotatably connected to the dust box body, and the rotation axis direction of the first dust shield is consistent with the relative direction of the dust suction port and the air exhaust port.
4. The dust box of the sweeping machine according to claim 3, characterized in that: The dust box body also includes a first limiting portion, which is arranged in the collecting chamber. The first dust barrier includes a first rotating end rotatably connected to the dust box body and a first free end freely arranged. The first limiting portion is arranged to be able to abut against the first surface of the first free end when the first dust barrier rotates.
5. The dust box of the sweeping machine according to claim 4, characterized in that: When the first surface abuts against the first limiting portion, in a direction perpendicular to the dust suction port and opposite to the air outlet, the first rotating end is farther away from the center of the dust suction port than the first free end.
6. The dust box of a sweeping machine according to any one of claims 1 to 5, characterized in that: The dust box of the sweeping machine also includes a second dust barrier sheet arranged in the collecting chamber and connected to the dust box body. The second dust barrier sheet and the first dust barrier sheet are arranged side by side in a direction perpendicular to the dust suction port and opposite to the air exhaust port. The second dust barrier sheet is provided with a third surface and a fourth surface facing away from each other in this direction. On the side facing the third surface, a partial area of the dust suction port is opposite to and connected to a partial area of the air exhaust port, and on the side facing the fourth surface, a partial area of the dust suction port is opposite to and connected to a partial area of the air exhaust port. The second surface is opposite to the third surface, the first surface is arranged on the side of the first dust barrier sheet facing away from the second dust barrier sheet, the fourth surface is arranged on the side of the second dust barrier sheet facing away from the first dust barrier sheet, and the fourth surface is an arc-shaped convex surface.
7. The dust box of the sweeping machine according to claim 6, characterized in that: The second dust shield is movably connected to the dust box body, and the second dust shield is configured to change the size of the space facing the third surface and the size of the space facing the fourth surface when the second dust shield moves relative to the dust box body.
8. The dust box of the sweeping machine according to claim 7, characterized in that: The second dust shield is rotatably connected to the dust box body, and the rotation axis direction of the second dust shield is consistent with the relative direction of the dust suction port and the air exhaust port.
9. The dust box of the sweeping machine according to claim 8, characterized in that: The dust box body also includes a second limiting portion, which is arranged in the collecting chamber. The second dust barrier includes a second rotating end rotatably connected to the dust box body and a freely arranged second free end. The second limiting portion is arranged to abut against a fourth surface of the second free end when the second dust barrier rotates.
10. The dust box of the sweeping machine according to claim 9, characterized in that: When the fourth surface abuts against the second limiting portion, in a direction perpendicular to the dust suction port and opposite to the air outlet, the second rotating end is farther away from the center of the dust suction port than the second free end.
11. A sweeping robot, characterized in that: It comprises the dust box of a sweeping machine as claimed in any one of claims 1 to 10.