Dust cup assembly, cleaning device and filter screen

Abstract

The utility model provides a dust cup assembly, a cleaning device and a filter screen, the dust cup assembly comprises a cup body and the filter screen, and the cup body is provided with an inner cavity; the filter screen is arranged in the inner cavity, a containing space is formed between the filter screen and the cup body, the filter screen comprises a mesh portion and a non-porous portion, the mesh portion is provided with meshes, the non-porous portion is of a closed structure, and the non-porous portion accounts for 5%-40% of the total area of the filter screen. According to the dust cup assembly, the capacity of the dust cup assembly for fully containing garbage can be guaranteed to a certain extent, especially when the dust cup is cleaned through airflow, circulation of the cleaning airflow can be guaranteed, then it is guaranteed that cleaning is normally and rapidly conducted, and the filtering function of the filter screen is not excessively affected.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of cleaning equipment, and more particularly relates to a dust cup assembly, a cleaning device and a filter screen. BACKGROUND

[0002] The cleaning device is usually provided with a dust cup, and the dust cup is provided with a filter screen. The dust cup and the filter screen form a containing space therebetween to contain the sucked garbage. When the sucked garbage is relatively much, the garbage is prone to adhere to the filter screen, so that the airflow in the dust cup is blocked, and it is difficult to clean the dust cup through the airflow. CONTENT OF THE UTILITY MODEL

[0003] The dust cup assembly, the cleaning device and the filter screen are provided to solve the technical problem that the airflow in the dust cup is blocked and it is difficult to clean the dust cup through the airflow in the prior art.

[0004] To achieve the above-mentioned purpose, the technical scheme adopted by the application is as follows: a dust cup assembly is provided, and the dust cup assembly comprises:

[0005] a cup body having an inner cavity;

[0006] a filter screen arranged in the inner cavity and having a containing space between the filter screen and the cup body, the filter screen comprising a mesh hole part and a non-hole part, the mesh hole part having mesh holes, and the non-hole part being a closed structure;

[0007] The non-hole part accounts for 5%-40% of the total area of the filter screen.

[0008] Optionally, the dust cup further comprises a rib arranged on the filter screen, the rib divides the filter screen into a plurality of sub-zones, and at least one sub-zone has the mesh hole part and the non-hole part.

[0009] Optionally, the non-hole part accounts for 10%-20% of the total area of the filter screen.

[0010] Optionally, the dust cup assembly further comprises an air inlet structure having an air inlet communicating with the containing space, and the non-hole part comprises a first non-hole part located at a position corresponding to the air inlet of the filter screen.

[0011] Optionally, the filter screen is in a cylindrical structure, the filter screen has oppositely arranged first and second ends, the first end is provided with an end member, the side of the end member facing the second end is provided with a spiral surface arranged along the outer periphery of the cylindrical structure, the spiral surface comprises a starting portion and a terminal portion located at both ends of the spiral surface, and the spiral surface gradually approaches the second end from the starting portion to the terminal portion.

[0012] The first end of the cylindrical structure is provided with the air inlet structure, the air inlet structure has the air inlet communicating with the containing space, and the air inlet faces the starting portion.

[0013] Optionally, the non-hole part comprises a second non-hole part, which is arranged at a position corresponding to the starting part of the spiral surface on the filter screen.

[0014] Optionally, the second non-hole part is in a plurality, and the plurality of second non-hole parts are arranged at intervals along the extension direction of the spiral surface.

[0015] Optionally, at least one first protruding strip is arranged at a position close to the ending part on the spiral surface, and the first protruding strip is arranged along the extension direction of the spiral surface.

[0016] Optionally, the side of the first end part member facing the second end further has a plane extending along the outer periphery of the cylindrical structure, the plane is connected with the starting part, the air inlet is arranged at an end of the plane away from the starting part, and at least one second protruding strip is arranged on the plane, and the second protruding strip is arranged along the extension direction of the plane.

[0017] The application further provides a cleaning device comprising the dust cup assembly.

[0018] The application further provides a filter screen for the dust cup assembly, the filter screen comprising a mesh part and a non-hole part, the mesh part having mesh holes, and the non-hole part being a closed structure, and the non-hole part accounting for 5%-40% of the total area of the filter screen.

[0019] The dust cup assembly, the cleaning device and the filter screen provided by the application have the following beneficial effects: compared with the prior art, the filter screen of the dust cup assembly in the application further comprises a non-hole part in addition to a mesh part, and garbage cannot be stuck on the filter screen at the position of the non-hole part, so that a gap for airflow to pass through can be formed at the position of the non-hole part, airflow in the containing space of the filter screen is prevented from being blocked, the normal function of the dust cup assembly is affected, the ability of the dust cup assembly to fully contain garbage is ensured to a certain extent, especially when the dust cup is cleaned by using airflow, the circulation of the cleaning airflow is ensured, and the normal and rapid cleaning is ensured to proceed, and the filtering function of the filter screen is not affected too much. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without any creative labor.

[0021] Figure 1 It is an external schematic view of the dust cup assembly in the embodiments of the application.

[0022] Figure 2 It is an internal schematic view of the dust cup assembly in the embodiments of the application.

[0023] Figure 3FIG. 1 is a schematic view of an air inlet structure according to an embodiment of the present application;

[0024] Figure 4 FIG. 2 is a schematic view of an arrangement of a first non-hole portion according to an embodiment of the present application;

[0025] Figure 5 FIG. 3 is a schematic view of an arrangement of a second non-hole portion according to an embodiment of the present application;

[0026] Figure 6 FIG. 4 is a schematic view of an arrangement of a convex strip according to an embodiment of the present application.

[0027] In the drawings, the reference signs designate the following items:

[0028] cup 1, containing space 11, filter screen 2, mesh portion 21, first non-hole portion 221, second non-hole portion 222, first end 23, second end 24, rib 3, air inlet structure 4, air inlet 41, end member 5, helical surface 51, start portion 511, end portion 512, flat surface 52, first convex strip 61, second convex strip 62. DETAILED DESCRIPTION

[0029] In order to make the technical problems solved by the present application, the technical solutions and the beneficial effects clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not used to limit the present application.

[0030] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0031] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0032] In addition, the terms "first", "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0033] Please refer to Figure 1 , Figure 2 and Figure 4 , the dust cup assembly provided by the embodiments of the present application will be described. The dust cup assembly comprises:

[0034] a cup body 1 having an inner cavity;

[0035] a filter screen 2 arranged in the inner cavity, and the filter screen 2 and the cup body 1 have a containing space 11 therebetween, the filter screen 2 comprises a mesh portion 21 having mesh holes and a non-mesh portion, and the non-mesh portion is a closed structure;

[0036] The non-mesh portion accounts for 5%-40% of the total area of the filter screen.

[0037] The cleaning device can be used to suck up dust, debris and other garbage on the surface of the ground, carpet, furniture, etc. to achieve the purpose of cleaning. The cleaning device can generate negative pressure through the suction assembly to suck the surrounding air and dust, sand, soil, skin debris, fine hair and other garbage into the dust cup assembly. The filter screen 2 arranged in the dust cup assembly separates the sucked air from the garbage, collects the garbage in the dust cup assembly, and discharges the clean air outside the dust collector.

[0038] The dust cup assembly mainly comprises a cup body 1 and a filter screen 2. The cup body 1 has an inner cavity for containing garbage and airflow sucked from the dust suction port. The filter screen 2 is arranged in the inner cavity to play a role in filtering and separating garbage. The filter screen 2 and the cup body 1 have a containing space 11 therebetween, which is used to collect the garbage separated by the filter screen 2.

[0039] The filter screen 2 separates garbage through the mesh holes penetrating thereon. When the air with garbage passes through the filter screen 2, the air can flow through the mesh holes, while the garbage cannot pass through the mesh holes and is intercepted. In actual use, many pet hairs, fine fibers and other garbage will be stuck in the mesh holes of the filter screen 2 and then attached to the filter screen 2. When there is a large amount of garbage attached to the filter screen 2, the airflow passage of the containing space 11 will be blocked.

[0040] Many cleaning devices currently have a self-cleaning function, which can automatically clean the garbage collected in the dust cup assembly to the base station. The principle of self-cleaning is to flush the containing space 11 of the dust cup assembly with airflow to make the garbage therein discharged with the airflow. However, when the airflow passage of the containing space 11 is blocked, the airflow cannot pass through the containing space 11, which will cause the self-cleaning function to fail. Especially when the containing space 11 is full of garbage, the airflow passage will be seriously blocked due to a large amount of garbage attached to the filter screen 2, which will make the cleaning device unable to play the self-cleaning function.

[0041] In the embodiment, the filter screen 2 comprises a mesh part 21 and a non-mesh part. The mesh part 21 has mesh holes, and the non-mesh part is a closed structure. The mesh part 21 can normally play the filtering function of the filter screen 2 to separate air from garbage. The non-mesh part is a closed structure, and its role is not to play the filtering function. Accordingly, garbage cannot be attached to the non-mesh part, and the garbage in the dust cup assembly cannot be tightly combined with the non-mesh part, so that an air flow channel can be formed between the two.

[0042] Due to the existence of the non-mesh part, when the dust cup assembly is self-cleaned, even if the containing space 11 is full of garbage, the air flow can pass through the non-mesh part where the garbage and the filter screen 2 are not tightly combined, and the air flow channel is formed through the non-mesh part. Once the air flow passes, the garbage can be discharged with the air flow, thereby ensuring the self-cleaning of the dust cup assembly. In addition, the garbage and the non-mesh part are tightly combined with each other, and the garbage in the non-mesh part is easier to be cleaned. After the garbage in the non-mesh part is cleaned, the air flow can pass through the non-mesh part naturally, thereby further improving the cleaning efficiency of the garbage. In addition, when the cleaning device is working, the non-mesh part position will not be attached with garbage, and the air flow can pass through the position better, which is conducive to the dispersion of the garbage with the air flow on the entire filter screen 2, thereby fully utilizing the filtering function of the entire filter screen 2.

[0043] The non-mesh part accounts for 5%-40% of the total area of the filter screen 2. Although the non-mesh part can ensure the passage of the air flow and facilitate the cleaning of the garbage in the dust cup assembly, it cannot play the filtering function itself. Therefore, if the area of the non-mesh part accounts for too large a proportion, it will affect the overall filtering function of the filter screen 2, and if the area accounts for too small a proportion, it will be difficult to play the role of enhancing the self-cleaning of the dust cup. Through experiments, when the non-mesh part accounts for 5% of the total area of the filter screen 2, that is, the ratio of the non-mesh part to the mesh part 21 is more than 1:19, the role of enhancing the self-cleaning of the dust cup can be basically played. When the non-mesh part accounts for no more than 40% of the total area of the filter screen 2, that is, the ratio of the non-mesh part to the mesh part 21 is no more than 2:5, it will not have too much impact on the filtering function of the filter screen 2.

[0044] Further, in another embodiment of the present application, when the non-mesh part accounts for 10%-20% of the total area of the filter screen 2, the filtering function of the filter screen can be ensured to be almost unaffected, and the problem of self-cleaning blockage can almost not occur, so that the filtering function of the filter screen 2 and the self-cleaning function of the dust cup can be best balanced.

[0045] Please refer to Figure 4 and Figure 5 In some embodiments of the present application, the dust cup further comprises a rib 3, which is arranged on the filter screen 2. The rib 3 divides the filter screen 2 into multiple sub-zones, and at least one sub-zone has a mesh part 21 and a non-mesh part.

[0046] In the inner cavity of the dust cup, a rib 3 is arranged on the filter screen 2, which can serve as a mounting structure of the filter screen 2 and provide support and reinforcement for the filter screen 2. The specific arrangement of the rib 3 can be multiple arrangements. The multiple arrangements of the rib 3 can prevent long hair, fibers and other garbage from being tangled on the filter screen 2 and being cleaned during self-cleaning.

[0047] The rib 3 not only supports the filter screen 2, but also divides the filter screen 2 into multiple partitions, which can naturally form multiple separated filtering areas. The mesh part 21 and the non-mesh part can be designed according to the location of the filtering areas. Some partitions can be all mesh parts 21, but at least one partition has a mesh part 21 and a non-mesh part, so that the partition can maintain an airflow channel, thereby ensuring that the garbage can be cleaned smoothly during the cleaning process of the dust cup assembly.

[0048] Please refer to Figure 1 Figure 3 and Figure 4 In some embodiments of the present application, the dust cup assembly further comprises an air inlet structure 4 having an air inlet 41 communicating with the containing space 11. The non-mesh part comprises a first non-mesh part 221 located at a position corresponding to the air inlet 41 of the filter screen 2.

[0049] The air inlet 41 of the air inlet structure 4 of the dust cup assembly is the entrance of the airflow and the garbage, and at this position, the garbage enters the dust cup along with the airflow. The position of the filter screen 2 corresponding to the air inlet 41 is the first position of the filter screen 2 reached by the airflow entering from the air inlet 41, and it is also the position where the garbage first adheres to the filter screen 2 and is the most easily clogged position. Once the garbage adheres to this position in large quantities, it will affect the normal function and effect during the cleaning operation of the cleaning device or during self-cleaning. During the cleaning operation of the cleaning device, if the filter screen 2 is clogged by too much garbage at the position corresponding to the air inlet 41, it will directly affect the entering airflow and garbage, reduce the air intake efficiency, and prevent the airflow from dispersing in the dust cup. During self-cleaning of the cleaning device, the clogging at this position will directly make it difficult for air to enter, and thus the self-cleaning function cannot be performed.

[0050] In this embodiment, the first non-mesh part 221 is located at a position corresponding to the air inlet 41 of the filter screen 2. The presence of the non-mesh part at this position can prevent garbage from adhering to this position and ensure the flow of the airflow at this position, which is more conducive to the entry and dispersion of the airflow and garbage during the cleaning operation of the cleaning device. During self-cleaning of the cleaning device, the unobstructed air inlet can also ensure that the cleaning airflow enters the dust cup to achieve self-cleaning.

[0051] Please refer to Figure 4 and Figure 5In some embodiments of the present application, the filter screen 2 has a cylindrical structure, and the filter screen 2 has a first end 23 and a second end 24 arranged oppositely, the first end 23 is provided with an end member 5, and the end member 5 has a spiral surface 51 arranged along the outer periphery of the cylindrical structure on the side facing the second end 24, the spiral surface 51 includes a starting portion 511 and a terminal portion 512 at both ends of the spiral surface 51, and the spiral surface 51 gradually approaches the second end 24 from the starting portion 511 to the terminal portion 512; the first end 23 of the cylindrical structure is provided with an air inlet structure 4, and the air inlet structure 4 has an air inlet 41 communicating with the containing space 11, and the air inlet 41 faces the starting portion 511.

[0052] The filter screen 2 has various forms according to different cleaning devices, and the cylindrical structure is the most common form, which provides a larger filtering area while maintaining a compact shape. The filter screen 2 has a first end 23 and a second end 24 arranged oppositely, and the first end 23 is usually the inlet end and is provided with an end member 5, which provides structural support for the filter screen 2. The end member 5 has a spiral surface 51 arranged along the outer periphery of the cylindrical structure on the side facing the second end 24, and the spiral surface 51 is arranged along the outer periphery of the cylindrical structure, starting from the starting portion 511 and gradually approaching the second end 24 of the filter screen 2. The spiral surface 51 can guide the airflow,

[0053] The first end 23 of the cylindrical structure is provided with an air inlet structure 4, and the air inlet structure 4 has an air inlet 41 communicating with the containing space 11, and the air inlet 41 of the air inlet structure 4 of the dust cup assembly is the inlet of the airflow and the garbage, and the air inlet 41 faces the starting portion 511, so that the airflow entering the dust cup reaches the starting portion 511 of the spiral surface 51, and the airflow is guided to gradually move along the path of the spiral surface 51 from the first end 23 to the second end 24, so that the airflow is uniformly distributed in the circumferential and radial directions along the filter screen 2, and the filtering capacity of the filter screen 2 is fully utilized.

[0054] Please refer to Figure 5 In some embodiments of the present application, the non-porous portion includes a second non-porous portion 222 arranged on the filter screen 2 at a position corresponding to the starting portion 511 of the spiral surface 51. The starting portion 511 of the spiral surface 51 is the starting position of the airflow reaching the spiral surface 51, and it is not desirable to have blockage at this position. Therefore, the second non-porous portion 222 is arranged at this position, and when the airflow enters the filter screen 2 from the air inlet 41 and moves along the path of the spiral surface 51, it will first encounter the second non-porous portion 222. The second non-porous portion 222 can ensure that an airflow channel is formed at this position during dust collection and self-cleaning of the cleaning device, so that the airflow can better reach the spiral surface 51, avoid blockage, and ensure that the cleaning device can normally perform the functions of dust collection and self-cleaning.

[0055] Please refer to Figure 4In some embodiments of the present application, the number of the second non-hole portions 222 is multiple, and the multiple second non-hole portions 222 are arranged at intervals along the extension direction of the spiral surface 51. Since the spiral surface 51 is a relatively long area, it is difficult to meet its demand for airflow by arranging only one second non-hole portion 222. Therefore, in the present embodiment, multiple second non-hole portions 222 are arranged at the position of the filter screen 2 corresponding to the starting portion 511 of the spiral surface 51, and the multiple second non-hole portions 222 are arranged at intervals along the extension direction of the spiral surface 51, so that the filter screen 2 at this position can not only ensure the passage of airflow, but also retain the basic filtering function, so that the airflow circulation and filtering capacity of the dust cup assembly are better balanced. The width of the second non-hole portion 222 along the circumference of the dust cup is set according to the specification of the filter screen 2, for example, it can be set to 3mm, 4mm or 5mm, etc.

[0056] Please refer to Figure 5 and Figure 6 In some embodiments of the present application, at least one first protrusion 61 is arranged at the position close to the termination portion 512 of the spiral surface 51, and the first protrusion 61 is arranged along the extension direction of the spiral surface 51. The side of the first end 23 portion component facing the second end 24 also has a plane 52 extending along the outer circumference of the cylindrical structure, and the plane 52 is connected with the starting portion 511. The air inlet 41 is arranged at the end of the plane 52 away from the starting portion 511, and at least one second protrusion 62 is arranged on the plane 52, and the second protrusion 62 is arranged along the extension direction of the plane 52.

[0057] When the garbage is accumulated at the position where the protrusion is arranged, the protrusion can support a certain gap between the surface where the protrusion is arranged and the garbage, and the gap can be used for the passage of airflow.

[0058] In the present embodiment, at least one first protrusion 61 is arranged at the position close to the termination portion 512 of the spiral surface 51, so that the position close to the termination portion 512 of the spiral surface 51 can have a gap for the passage of airflow, and the first protrusion 61 is arranged along the extension direction of the spiral surface 51, so as to ensure the circulation of airflow along the extension direction of the spiral surface 51.

[0059] The first protrusion 61 and the second protrusion 62 can be provided alone or simultaneously, and when provided simultaneously, the first end 23 part member further has a flat surface 52 extending along the outer periphery of the cylindrical structure on the side facing the second end 24. The flat surface 52 is connected to the starting portion 511, and the air inlet 41 is provided at the end of the flat surface 52 away from the starting portion 511. The presence of the flat surface 52 can make the air flow entering the air inlet 41 not directly pass through the spiral surface 51, but first pass through a section of the flat surface 52. The buffering of the section of the flat surface 52 prevents the spiral surface 51 from affecting the inflow of the air flow. After passing through the flat surface 52, the air flow enters the spiral surface 51 and is guided and dispersed by the spiral surface 51. The flat surface 52 is provided with at least one second protrusion 62, so that the flat surface 52 can have a gap for the air flow to pass through. The second protrusion 62 is arranged along the extension direction of the flat surface 52, so as to ensure the air flow to pass through along the extension direction of the flat surface 52.

[0060] The first protrusion 61 and the second protrusion 62 are respectively close to the terminal portion 512 and the starting portion 511 of the spiral surface 51, which can ensure that the terminal portion 512 and the starting portion 511 of the spiral surface 51 can have a gap for the air flow to pass through. On the one hand, it ensures the guidance of the air flow by the spiral surface 51, and on the other hand, it ensures that the air flow can better circulate in the spiral surface 51 when the dust cup assembly is self-cleaning.

[0061] The number of the first protrusion 61 and the second protrusion 62 can be one, two or three, etc. according to needs. Generally, two is better and does not occupy a large space. The cross section of the first protrusion 61 can be V-shaped, so as to be more convenient to manufacture and support the garbage.

[0062] Based on the dust cup assembly described above, the application further provides a cleaning device, which comprises the dust cup assembly described above. The filter screen 2 of the dust cup assembly comprises a mesh portion 21 and a non-porous portion. The mesh portion 21 has mesh holes, and the non-porous portion is a closed structure. The mesh portion 21 can normally play the filtering function of the filter screen 2 to separate the air from the garbage. The non-porous portion is a closed structure, and its role is not to play the filtering function. Correspondingly, the garbage cannot be attached to the non-porous portion, and the garbage in the dust cup assembly cannot be tightly combined with the non-porous portion, so that an air flow channel can be formed between the two.

[0063] Due to the presence of the non-porous part, when the dust cup assembly of the cleaning device is self-cleaning, even if the inner space 11 is full of garbage, the air flow can pass through the non-porous part where the garbage and the filter screen 2 are not tightly combined, form an air flow channel through the non-porous part, and once the air flow passes through, the garbage can be discharged with the air flow, thereby ensuring the self-cleaning of the dust cup assembly; and the garbage and the non-porous part are tightly combined with each other, and the garbage in the non-porous part is also easier to clean. When the garbage in the non-porous part is cleaned, the air flow passing property can be naturally improved, and the garbage cleaning efficiency can be further improved. In addition, when the cleaning device is working, the non-porous part position will not be attached with garbage, and the air flow can pass through the position better, which is conducive to the garbage being better dispersed on the entire filter screen 2 with the air flow, thereby fully utilizing the filtering function of the entire filter screen 2. The non-porous part accounts for 5%-40% of the total area of the filter screen 2, and can basically play a role in enhancing the self-cleaning of the dust cup, and will not have too much influence on the filtering function of the filter screen 2. Further, when the non-porous part accounts for 10%-20% of the total area of the filter screen 2, the filtering function of the filter screen 2 and the self-cleaning function of the dust cup can be best balanced.

[0064] The application also provides a filter screen 2 for a dust cup assembly, the filter screen 2 comprising a mesh part 21 and a non-porous part, the mesh part 21 having mesh holes, and the non-porous part being a closed structure, and the non-porous part accounting for 5%-40% of the total area of the filter screen 2.

[0065] The filter screen 2 comprises a mesh part 21 and a non-porous part, the mesh part 21 having mesh holes, and the non-porous part being a closed structure. Among them, the mesh part 21 can normally play the filtering function of the filter screen 2 to separate the garbage from the air. The non-porous part is a closed structure, and its role is not to play a filtering function. Correspondingly, garbage cannot be attached to the non-porous part, and the garbage in the dust cup assembly and the non-porous part cannot be tightly combined, so that an air flow channel can be formed therebetween. The dust cup assembly and the cleaning device using the filter screen 2 can achieve better dust collection and self-cleaning effects.

[0066] The non-hole part can ensure the airflow to pass through and facilitate the cleaning of the garbage in the dust cup assembly, but it cannot play a filtering function itself, so if the area ratio of the non-hole part is too large, it will affect the overall filtering function of the filter screen 2, and if the area ratio is too small, it will be difficult to play the role of enhancing the self-cleaning of the dust cup. Through experiments, when the non-hole part accounts for 5% of the total area of the filter screen 2, that is, the ratio of the non-hole part and the mesh part 21 is more than 1:19, it can basically play the role of enhancing the self-cleaning of the dust cup, and when the non-hole part accounts for no more than 40% of the total area of the filter screen 2, that is, the ratio of the non-hole part and the mesh part 21 is no more than 2:5, it will not have a great impact on the filtering function of the filter screen 2. Further, when the non-hole part accounts for 10%-20% of the total area of the filter screen 2, the filtering function of the filter screen can be ensured to be almost unaffected, and the problem of self-cleaning blockage can almost not occur, so that the filtering function of the filter screen 2 and the self-cleaning function of the dust cup can be best balanced.

[0067] The above is only a preferred embodiment of the present application and is not used to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A dust cup assembly for a cleaning device, characterized in that, The dust cup assembly includes: The cup body has an inner cavity; A filter screen is disposed in the inner cavity, and there is a receiving space between the filter screen and the cup body. The filter screen includes a mesh portion and a non-porous portion. The mesh portion has mesh holes, and the non-porous portion is a closed structure. The non-porous portion accounts for 5%-40% of the total area of ​​the filter screen.

2. The dust cup assembly as described in claim 1, characterized in that, The dust cup also includes ribs disposed on the filter screen, the ribs dividing the filter screen into multiple sections, at least one of the sections having a perforated portion and a non-perforated portion.

3. The dust cup assembly as described in claim 1, characterized in that, The non-porous portion accounts for 10%-20% of the total area of ​​the filter screen.

4. The dust cup assembly as described in claim 1, 2, or 3, characterized in that, The dust cup assembly further includes an air inlet structure having an air inlet communicating with the accommodating space, and the non-porous portion includes a first non-porous portion located at the position of the filter corresponding to the air inlet.

5. The dust cup assembly as described in claim 1, characterized in that, The filter screen has a cylindrical structure and has a first end and a second end that are disposed opposite to each other. The first end is provided with an end member. The end member has a spiral surface that is wound around the outer periphery of the cylindrical structure on the side facing the second end. The spiral surface includes a starting part and a terminating part located at both ends of the spiral surface. The spiral surface gradually approaches the second end from the starting part to the terminating part. The first end of the cylindrical structure is provided with an air inlet structure, the air inlet structure having an air inlet that connects to the accommodating space, the air inlet facing the starting part.

6. The dust cup assembly as described in claim 5, characterized in that, The non-porous portion includes a second non-porous portion, which is disposed on the filter screen at the position corresponding to the starting portion of the spiral surface.

7. The dust cup assembly as described in claim 6, characterized in that, The number of the second non-porous portions is multiple, and the multiple second non-porous portions are arranged at intervals along the extension direction of the spiral surface.

8. The dust cup assembly as described in any one of claims 5-7, characterized in that, At least one first protrusion is provided on the spiral surface near the termination portion, and the first protrusion is provided along the extension direction of the spiral surface; And / or, the first end member has a plane extending along the outer periphery of the cylindrical structure on the side facing the second end, the plane being connected to the starting portion, the air inlet being disposed at the end of the plane away from the starting portion, and at least one second protrusion being disposed on the plane, the second protrusion being disposed along the extending direction of the plane.

9. A cleaning device, characterized in that, The cleaning device includes the dust cup assembly as described in any one of claims 1-8.

10. A filter screen for a dust cup assembly, characterized in that, The filter screen includes a perforated portion and a non-perforated portion. The perforated portion has perforations, and the non-perforated portion has a closed structure. The non-perforated portion accounts for 5%-40% of the total area of ​​the filter screen.

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