A self-cleaning structure for dust cup filter and a vacuum cleaner

Abstract

This utility model relates to the field of vacuum cleaner technology, and discloses a self-cleaning structure for a dust cup filter and a vacuum cleaner, including a body and a dust cup assembly disposed on the body. The dust cup assembly includes a cup body and a filter frame. A filter is arranged in a ring around the filter frame. A first tangential air inlet is provided on the cup body for generating a downward spiral airflow on the outside of the filter. A cleaning brush component is rotatably disposed on the filter frame for scraping and cleaning the filter. This utility model generates a downward spiral airflow through the first tangential air inlet, causing most of the dust and debris mixed with the air to rotate downward under the combined action of centrifugal force and gravity, and eventually deposit it at the bottom of the cup body, thereby improving the dust separation efficiency in the cup body and preventing filter clogging. At the same time, the wind force of the downward spiral airflow drives the cleaning brush component to rotate and scrape and clean the filter, thereby cleaning the dust and other debris adsorbed on the filter in real time, preventing clogging and ensuring strong suction.

Description

Technical Field

[0001] This utility model relates to the field of vacuum cleaner technology, and more specifically, to a self-cleaning structure for a dust cup filter and a vacuum cleaner. Background Technology

[0002] Currently, most vacuum cleaners on the market employ a cyclone separation design in their dust cups. This design uses tangential airflow to create a rotating motion within the dust cup, and through the combined effects of centrifugal force and gravity, most dust and particulate matter are separated and settle at the bottom of the dust cup, thus improving dust-air separation efficiency and reducing the burden on the filter. However, in actual use, lightweight contaminants such as hair, lint, and fine dust can still easily adhere to the filter surface due to adsorption or airflow entrainment, and may even accumulate in the gap between the inner wall of the dust cup and the filter. Such accumulation can cause the dust cup to become clogged before reaching its rated capacity, severely affecting the normal operation of the vacuum cleaner, reducing suction performance, and increasing the frequency of maintenance for the user.

[0003] Some existing vacuum cleaners with cleaning functions use a push rod mechanism to link the opening of the dust cup end cap with the movement of the internal scraper ring. When emptying the dust, the user pushes the push rod, which opens the end cap and drives the scraper ring to scrape off attached contaminants from top to bottom along the outer circumference of the filter, achieving filter self-cleaning during dust emptying. This mechanism improves the convenience of filter maintenance to some extent, but it still has significant limitations: the filter cleaning action is only triggered when the user performs the dust emptying operation, and it cannot clean the filter in real time during vacuum cleaner operation. This makes it unable to cope with the problem of decreased suction power or debris jamming caused by real-time clogging. The machine's performance may still degrade due to filter clogging during continuous working cycles, lacking a continuous and stable suction guarantee, resulting in a poor user experience. Utility Model Content

[0004] To address at least one of the aforementioned problems, this utility model provides a self-cleaning structure for a dust cup filter, comprising a body and a dust cup assembly disposed on the body. The dust cup assembly includes a cup body and a filter holder. A dust-collecting chamber is provided within the cup body, and the filter holder is placed within the dust-collecting chamber. A filter is arranged in a ring along the circumferential direction on the filter holder. A first tangential air inlet is provided on the cup body for generating a downward spiral airflow outside the filter. A cleaning brush component is rotatably disposed on the filter holder for scraping and cleaning the filter. In use, the body activates to generate suction, causing air containing debris to enter through the first tangential air inlet. The air inlet tangentially enters the dust-collecting chamber, generating a downward spiral. The force of this downward spiral drives the cleaning brush component to rotate, scraping and cleaning the filter screen. This invention uses a first tangential air inlet to generate a downward spiral, causing most of the dust and debris mixed in the air to rotate downwards under the combined action of centrifugal force and gravity, eventually settling at the bottom of the cup. This improves dust separation efficiency within the cup and prevents filter screen clogging. Simultaneously, the downward spiral drives the cleaning brush component to rotate, scraping and cleaning the filter screen, thus cleaning the dust and debris adsorbed on the filter screen in real time, preventing clogging and ensuring strong suction.

[0005] Optionally, the cleaning brush component includes a rotating frame and cleaning brush strips disposed on the rotating frame. Multiple cleaning brush strips are arranged at equal intervals in a ring along the circumferential direction of the rotating frame, and one side of each cleaning brush strip is close to or in contact with the filter screen.

[0006] Optionally, the dust-collecting chamber is provided with an inner sidewall, and the side of the cleaning brush away from the filter is close to or in contact with the inner sidewall, and the cleaning brush is spirally extended.

[0007] Optionally, the cleaning brush strip is provided with a plug and a limiting rib, and the rotating frame is provided with a plug groove for plugging into the plug; when the cleaning brush strip is assembled with the rotating frame, the plug is inserted into the plug groove, and the limiting rib abuts against the rotating frame for limiting.

[0008] Optionally, the cleaning brush strip is provided with reinforcing ribs that extend horizontally, and the cleaning brush strip is made of silicone or rubber.

[0009] Optionally, the rotating frame includes an integrally formed upper ring frame, a lower ring frame, and a plurality of connecting rods connecting the upper ring frame and the lower ring frame. The cleaning brush strip is disposed on the connecting rods. The upper ring frame is provided with a buckling part at its upper part. An elastic deformation part is connected between the buckling part and the upper ring frame. The filter frame is provided with an annular protrusion. One side of the annular protrusion forms a groove that engages with the buckling part. The annular protrusion is provided with a first guide slope. The upper ring frame is provided with a second guide slope corresponding to the first guide slope.

[0010] Optionally, the filter frame is provided with a first inner cavity, the first inner cavity is provided with a secondary filter support, the secondary filter support is provided with a plurality of conical cylinders, the conical cylinders are provided with a second inner cavity, the upper end of the conical cylinder is provided with an upper opening for connecting the second inner cavity and the machine body, the lower end of the conical cylinder is provided with a lower opening for connecting the second inner cavity and the first inner cavity, and the upper part of the conical cylinder is provided with a second tangential air inlet for tangential air intake into the second inner cavity.

[0011] Optionally, the filter frame includes a first support and a second support connected together, the secondary filter support is placed between the first support and the second support, the filter is placed on the first support, the second support is placed on the side of the first support near the body, the side of the second support near the body is detachably provided with filter cotton, the second support is provided with a first hollow guide post for connecting the second inner cavity and the filter cotton, the first hollow guide post extends downward and is placed in the second inner cavity, the body is provided with an air duct for connecting the filter cotton and the outside, the air duct is provided with a suction motor, the cup body is made of transparent material, and the second support is provided with a handle.

[0012] Optionally, the dust collection chamber has an opening at its lower end, and a cover plate for opening / closing the opening is hinged to the lower part of the cup body. The filter frame is connected between the machine body and the cover plate. A second hollow guide post is provided at the lower part of the filter frame. A positioning protrusion for inserting and positioning with the second hollow guide post is provided on the cover plate. A sealing ring for sealing against the lower end of the second hollow guide post is provided on the outer side of the positioning protrusion.

[0013] Compared to existing technologies, the self-cleaning structure of the dust cup filter in this invention generates a downward spiral airflow through the first tangential air inlet. This causes most of the dust and debris in the mixed air to rotate downwards under the combined action of centrifugal force and gravity, eventually settling at the bottom of the cup. This improves the dust separation efficiency within the cup and prevents filter clogging. Simultaneously, the downward spiral airflow drives the cleaning brush component to rotate, scraping and cleaning the filter. This ensures that the dust and debris adsorbed on the filter are cleaned in real time, preventing clogging and guaranteeing strong suction.

[0014] In addition, this utility model also provides a vacuum cleaner, which also has the beneficial effects of the above-mentioned dust cup filter self-cleaning structure, which will not be described in detail here. Attached Figure Description

[0015] Figure 1 This is a perspective view of the self-cleaning structure of the dust cup filter of this utility model;

[0016] Figure 2 This is a cross-sectional view of the self-cleaning structure of the dust cup filter of this utility model;

[0017] Figure 3 for Figure 2 Enlarged view of section A in the middle;

[0018] Figure 4 for Figure 2 Enlarged view of section B;

[0019] Figure 5 for Figure 2 Enlarged view of section C;

[0020] Figure 6 This is a schematic diagram of the first tangential air inlet of the self-cleaning structure of the dust cup filter of this utility model;

[0021] Figure 7 This is a schematic diagram of the handle part of the self-cleaning structure of the dust cup filter of this utility model;

[0022] Figure 8 This is a schematic diagram of the cleaning brush component of the dust cup filter self-cleaning structure of this utility model;

[0023] Figure 9 This is an exploded view of the cleaning brush component of the dust cup filter self-cleaning structure of this utility model;

[0024] Figure 10 This is a schematic diagram of the first support of the self-cleaning structure of the dust cup filter of this utility model;

[0025] Figure 11 This is a schematic diagram of the second support of the self-cleaning structure of the dust cup filter of this utility model;

[0026] Figure 12 This is a schematic diagram of the structure of the two-stage filter frame of the dust cup filter screen self-cleaning structure of this utility model;

[0027] The component names corresponding to the various labels in the figure are as follows: 1 is the main body, 11 is the air duct, 12 is the suction motor, 2 is the cup body, 20 is the dust collection chamber, 200 is the inner side wall, 201 is the first tangential air inlet, 3 is the filter frame, 301 is the filter, 302 is the annular protrusion, 303 is the slot, 304 is the first guide slope, 305 is the first inner cavity, 31 is the first support, 32 is the second support, 321 is the first hollow guide post, 322 is the handle, 33 is the filter cotton, 34 is the second hollow guide post, 4 is the cleaning brush component, and 41 is the rotating part. Frame, 411 is the insertion slot, 412 is the upper ring frame, 413 is the lower ring frame, 414 is the connecting rod, 415 is the buckle part, 416 is the elastic deformation part, 417 is the second guide slope, 42 is the cleaning brush strip, 421 is the insertion part, 422 is the limiting rib, 423 is the reinforcing rib, 5 is the secondary filter frame, 51 is the conical cylinder, 510 is the second inner cavity, 511 is the upper opening, 512 is the lower opening, 513 is the second tangential air inlet, 6 is the cover plate, 61 is the positioning protrusion, 62 is the sealing ring, 7 is the connecting pipe, and 8 is the vacuum mop. Detailed Implementation

[0028] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0029] In the description of this utility model, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship when the product is in normal use.

[0030] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

[0031] See Figures 1-12This utility model provides a self-cleaning structure for a dust cup filter, including a body 1 and a dust cup assembly disposed on the body 1. The dust cup assembly includes a cup body 2 and a filter frame 3. A dust-containing cavity 20 is provided inside the cup body 2, and the filter frame 3 is placed inside the dust-containing cavity 20. A filter 301 is arranged in a ring along the circumferential direction on the filter frame 3. A first tangential air inlet 201 is provided on the cup body 2 for generating a spiral downward swirling airflow outside the filter 301. A cleaning brush component 4 is rotatably disposed on the filter frame 3 for scraping and cleaning the filter 301. In use, the body 1 is activated to generate suction, so that air containing debris enters through the first tangential air inlet 201. The dust chamber 20 receives tangential airflow, generating a downward spiral. This downward spiral wind drives the cleaning brush component 4 to rotate, scraping and cleaning the filter screen 301. This invention generates a downward spiral wind through the first tangential air inlet, causing most of the dust and debris mixed in the air to rotate downwards under the combined action of centrifugal force and gravity, eventually settling at the bottom of the cup. This improves dust separation efficiency within the cup and prevents filter clogging. Simultaneously, the downward spiral wind drives the cleaning brush component to rotate, scraping and cleaning the filter screen, thereby cleaning the dust and debris adsorbed on the filter screen in real time, preventing clogging and ensuring strong suction.

[0032] Specifically, the first tangential air inlet 201 is connected to a connecting pipe 7, and the end of the connecting pipe 7 away from the first tangential air inlet 201 is connected to a vacuum mop 8; when the machine body 1 is started, the garbage on the ground is sucked into the dust cup assembly from the vacuum mop 8 along the connecting pipe 7, and then enters the machine body 1 and is discharged to the outside.

[0033] See Figure 2 , Figure 3 , Figure 8 and Figure 10The cleaning brush component 4 includes a rotating frame 41 and cleaning brush strips 42 mounted on the rotating frame 41. Multiple cleaning brush strips 42 are evenly spaced in a ring along the circumference of the rotating frame 41. One side of each cleaning brush strip 42 is close to or in contact with the filter screen 301. The presence of multiple cleaning brush strips 42 ensures that the entire circumferential area of ​​the filter screen is cleaned evenly and efficiently, avoiding any missed areas and resulting in a more thorough cleaning. Simultaneously, the multiple cleaning brush strips 42, driven by wind, generate greater rotational torque and smoother rotation. This not only improves the efficiency of the cleaning action but also prevents the brush frame from jamming or rotating sluggishly due to single-point force, ensuring the self-cleaning machine... It can operate reliably under various working conditions; the dust holding chamber 20 is provided with an inner wall 200, and the side of the cleaning brush 42 away from the filter screen 301 is close to or in contact with the inner wall 200. The cleaning brush 42 is spirally extended; when the cleaning brush 42 rotates, its inner side scrapes the dust and lint and other light debris attached to the outer surface of the filter screen to prevent the filter screen from clogging; its outer side scrapes the inner wall of the dust holding chamber at the same time, effectively removing the dust and lint and other light debris attached to the inner wall and preventing them from accumulating on the chamber wall, thus achieving efficient cleaning with "one brush for two purposes"; in addition, it can also clean the debris between the inner wall 200 and the filter screen 301.

[0034] See Figure 8 and Figure 9 The cleaning brush strip 42 is provided with a plug-in portion 421 and a limiting rib 422. The rotating frame 41 is provided with a plug-in groove 411 for plugging into the plug-in portion 421. The cooperation between the plug-in portion 421 and the plug-in groove 411 provides a clear installation path and final position, ensuring that each brush strip can be accurately and quickly installed into the predetermined position of the rotating frame 41, ensuring that the relative positions of all cleaning brush strips 42 are consistent, thereby forming a uniform cleaning force. When the cleaning brush strip 42 is assembled with the rotating frame 41, the plug-in portion 421 is inserted into the plug-in groove 411, and the limiting rib 422... The brush is positioned against the rotating frame 41 for limiting. During assembly, simply insert the plug part 421 into the plug slot 411 to the bottom for limiting, thus reducing assembly difficulty. The cleaning brush 42 is provided with reinforcing ribs 423, which extend horizontally. The cleaning brush 42 is made of silicone or rubber. The horizontally extending reinforcing ribs 423 can effectively resist the bending deformation, twisting or shaking of the brush during rotation and scraping, ensuring stable and reliable cleaning action. At the same time, the reinforcing ribs 423 increase the structural strength of the cleaning brush 42 and extend its service life.

[0035] See Figure 2 , Figure 3 , Figure 8 and Figure 9The rotating frame 41 includes an integrally formed upper annular frame 412, a lower annular frame 413, and several connecting rods 414 connecting the upper annular frame 412 and the lower annular frame 413. The upper annular frame and the lower annular frame form a sturdy frame through the connecting rods, ensuring the integrity and balance of the rotating frame. The cleaning brush strip 42 is set on the connecting rods 414. The upper part of the upper annular frame 412 is provided with a buckling part 415. An elastic deformation part 416 is connected between the buckling part 415 and the upper annular frame 412. The filter screen frame 3 is provided with an annular protrusion 302. One side of the annular protrusion 302 forms a groove 303 that engages with the buckling part 415. The annular protrusion 302 is provided with a first guide slope. 304. The upper annular frame 412 is provided with a second guide slope 417 corresponding to the first guide slope 304. When assembling the filter screen frame 3 with the upper annular frame 412, the filter screen frame 3 only needs to be installed upward into the upper annular frame 412. During the installation process, the first guide slope 304 and the second guide slope 417 cooperate to ensure that the assembled filter screen frame 3 and the upper annular frame 412 can be aligned, so as to ensure that the snap-fit ​​part 415 can be snapped into the slot 303. During the process of the snap-fit ​​part 415 snapping into the slot 303, the elastic deformation part 416 undergoes elastic bending. When the snap-fit ​​part 415 is fully snapped into the slot 303, the elastic deformation part 416 returns to its original position, so that the snap-fit ​​part 415 is not easy to fall out of the slot 303, and the installation is stable.

[0036] See Figure 2 , Figure 3 , Figure 11 and Figure 12 The filter frame 3 has a first inner cavity 305, which contains a secondary filter support 5. The secondary filter support 5 has several conical cylinders 51, each containing a second inner cavity 510. The upper end of each conical cylinder 51 has an upper opening 511 connecting the second inner cavity 510 to the main body 1, and the lower end has a lower opening 512 connecting the second inner cavity 510 to the first inner cavity 305. The upper part of each conical cylinder 51 has a second tangential air inlet 513 for tangential airflow into the second inner cavity 510. After the airflow from the dust cup undergoes preliminary separation and enters the first inner cavity 305, it is distributed to each conical cylinder 51. Each conical cylinder is an independent, small, high-efficiency cyclone separator. Airflow enters the second inner cavity 510 through the second tangential air inlet 513, forming a cyclone with a faster rotation speed and stronger centrifugal force. The powerful centrifugal force can throw the finer and lighter dust particles that the first-stage cyclone dust cup failed to separate onto the inner wall of the conical cylinder, and make them rotate downward along the cylinder wall, and finally fall back to the bottom of the first inner cavity 305 through the lower opening 512. The purified air is discharged from the central upper opening 511 and enters the filter cotton for the next stage of filtration.

[0037] See Figure 2 , Figure 3 , Figure 7 and Figure 8 The filter frame 3 includes a first support 31 and a second support 32 that are spliced ​​together. The first support 31 and the second support 32 are fixed by bolts. The secondary filter support 5 is placed between the first support 31 and the second support 32. The filter screen 301 is set on the first support 31. The second support 32 is placed on the side of the first support 31 near the body 1. The side of the second support 32 near the body 1 is detachably equipped with filter cotton 33 to further improve the filtration effect. The second support 32 is provided with a first hollow guide post 321 for connecting the second inner cavity 510 and the filter cotton 33. The first hollow guide post 321 extends downward and is placed in the second inner cavity 510. The body 1 is provided with an air duct 11 for connecting the filter cotton 33 and the outside. The air duct 11 is equipped with a suction motor 12. The cup body 2 is made of transparent material so that users can see the accumulation of garbage in the dust cup and clean it in time. The detachable design of the filter cotton 33 makes it convenient for users to clean or replace it regularly, and maintenance is convenient; the second bracket 32 ​​is equipped with a handle 322 so that users can remove the entire filter frame 3 from the cup body, reducing the difficulty of operation.

[0038] See Figure 2 , Figure 4 and Figure 8 The dust collection chamber 20 has an opening at its lower end. A cover plate 6, hinged to the lower part of the cup body 2, is used to open / close the opening. The filter frame 3 is connected between the body 1 and the cover plate 6. A second hollow guide post 34 is located at the lower part of the filter frame 3. The cover plate 6 has a positioning protrusion 61 for insertion and positioning with the second hollow guide post 34. A sealing ring 62 is annularly arranged on the outer side of the positioning protrusion 61 for sealing against the lower end of the second hollow guide post 34. By opening the cover plate 6 downwards, the opening at the lower end of the dust collection chamber 20 can be directly exposed, allowing for quick and clean dust disposal. The insertion and engagement of the positioning protrusion 61 with the second hollow guide post 34 ensures that the filter frame 3 can quickly and accurately align and fix with the cover plate 6 when closed. This provides a stable and reliable bottom support point for the entire filter frame assembly, preventing it from shaking during operation and ensuring structural stability and airtightness. The sealing surface formed by the sealing ring 62 and the lower end of the second hollow guide post 34 is crucial. It effectively prevents dirty air that has not been completely separated from the dust cup from short-circuiting through the bottom gap and directly leaking into the clean air channel at the rear, ensuring that all airflow must be fully filtered by the filter screen 301 and the secondary filter bracket 5, thus guaranteeing filtration efficiency and the cleanliness of the air outlet.

[0039] The self-cleaning structure of the dust cup filter in this invention generates a downward spiral airflow through the first tangential air inlet. This causes most of the dust and debris in the mixed air to rotate downwards under the combined action of centrifugal force and gravity, and eventually settle at the bottom of the cup. This improves the dust separation efficiency inside the cup and prevents the filter from clogging. At the same time, the downward spiral airflow drives the cleaning brush component to rotate, which scrapes and cleans the filter, thereby cleaning the dust and debris adsorbed on the filter in real time, preventing clogging and ensuring strong suction.

[0040] In addition, this utility model also provides a vacuum cleaner, which also has the beneficial effects of the above-mentioned dust cup filter self-cleaning structure, which will not be described in detail here.

[0041] In the description of this disclosure, it should be understood that the terms "upper", "lower", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure.

[0042] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0043] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0044] In this disclosure, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first feature or in indirect contact with the first feature through an intermediate medium.

[0045] It should be noted that when a component is described as being "set on" another component, it can be directly on the other component or there may be an intervening component. When a component is described as "connected to another component," it can be directly connected to the other component or there may be an intervening component. Furthermore, when a component is described as being "fixedly connected" to another component, the connection can be detachable or non-detachable, such as through socketing, snap-fitting, integral molding, welding, etc., which are achievable in conventional technologies and will not be elaborated upon here.

[0046] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A self-cleaning structure for a dust cup filter, characterized in that, The device includes a body (1) and a dust cup assembly mounted on the body (1). The dust cup assembly includes a cup body (2) and a filter frame (3). The cup body (2) has a dust-containing chamber (20). The filter frame (3) is placed inside the dust-containing chamber (20). A filter (301) is arranged in a ring along the circumferential direction on the filter frame (3). The cup body (2) has a first tangential air inlet (201) for generating a downward spiral wind on the outside of the filter (301). A cleaning brush component (4) for scraping and cleaning the filter (301) is rotatably mounted on the filter frame (3). When in use, the body (1) is activated to generate suction, so that air carrying debris is tangentially introduced into the dust-containing chamber (20) from the first tangential air inlet (201), generating the downward spiral wind. The downward spiral wind drives the cleaning brush component (4) to rotate, thereby scraping and cleaning the filter (301).

2. The self-cleaning structure of the dust cup filter according to claim 1, characterized in that, The cleaning brush component (4) includes a rotating frame (41) and cleaning brush strips (42) disposed on the rotating frame (41). Multiple cleaning brush strips (42) are arranged in a ring at equal intervals along the circumference of the rotating frame (41). One side of the cleaning brush strips (42) is close to or in contact with the filter screen (301).

3. The self-cleaning structure of the dust cup filter according to claim 2, characterized in that, The dust chamber (20) is provided with an inner sidewall (200), and the cleaning brush (42) is close to or in contact with the inner sidewall (200) on the side away from the filter (301), and the cleaning brush (42) is spirally extended.

4. The self-cleaning structure of the dust cup filter according to claim 2, characterized in that, The cleaning brush strip (42) is provided with a plug-in part (421) and a limiting rib (422), and the rotating frame (41) is provided with a plug-in groove (411) for plugging into the plug-in part (421); when the cleaning brush strip (42) is assembled with the rotating frame (41), the plug-in part (421) is inserted into the plug-in groove (411), and the limiting rib (422) abuts against the rotating frame (41) for limiting.

5. The self-cleaning structure of the dust cup filter according to claim 2, characterized in that, The cleaning brush strip (42) is provided with reinforcing ribs (423), which extend horizontally, and the cleaning brush strip (42) is made of silicone or rubber.

6. The self-cleaning structure of the dust cup filter according to claim 2, characterized in that, The rotating frame (41) includes an integrally formed upper ring frame (412), a lower ring frame (413), and a plurality of connecting rods (414) connecting the upper ring frame (412) and the lower ring frame (413). The cleaning brush strip (42) is disposed on the connecting rods (414). The upper ring frame (412) is provided with a buckle part (415). An elastic deformation part (416) is connected between the buckle part (415) and the upper ring frame (412). The filter frame (3) is provided with an annular protrusion (302). A groove (303) is formed on one side of the annular protrusion (302) that engages with the buckle part (415). A first guide slope (304) is provided on the annular protrusion (302). A second guide slope (417) corresponding to the first guide slope (304) is provided on the upper ring frame (412).

7. The self-cleaning structure of the dust cup filter according to claim 1, characterized in that, The filter frame (3) is provided with a first inner cavity (305), and a secondary filter support (5) is provided in the first inner cavity (305). A plurality of conical cylinders (51) are provided on the secondary filter support (5). A second inner cavity (510) is provided in the conical cylinder (51). An upper opening (511) for connecting the second inner cavity (510) and the body (1) is provided at the upper end of the conical cylinder (51). A lower opening (512) for connecting the second inner cavity (510) and the first inner cavity (305) is provided at the lower end of the conical cylinder (51). A second tangential air inlet (513) for tangentially air intake into the second inner cavity (510) is provided at the upper part of the conical cylinder (51).

8. The self-cleaning structure of the dust cup filter according to claim 7, characterized in that, The filter frame (3) includes a first support (31) and a second support (32) that are spliced ​​together. The secondary filter support (5) is placed between the first support (31) and the second support (32). The filter (301) is set on the first support (31). The second support (32) is placed on the side of the first support (31) close to the body (1). The side of the second support (32) close to the body (1) is detachably provided with filter cotton (33). The second support (32) is provided with a first hollow guide post (321) for connecting the second inner cavity (510) and the filter cotton (33). The first hollow guide post (321) extends downward and is placed in the second inner cavity (510). The body (1) is provided with an air duct (11) for connecting the filter cotton (33) with the outside. The air duct (11) is provided with a suction motor (12). The cup body (2) is made of transparent material. The second support (32) is provided with a handle (322).

9. The self-cleaning structure of the dust cup filter according to claim 1, characterized in that, The dust chamber (20) has an opening at its lower end. The cup body (2) is hinged to a cover plate (6) for opening / closing the opening. The filter frame (3) is connected between the body (1) and the cover plate (6). The filter frame (3) has a second hollow guide post (34) at its lower part. The cover plate (6) has a positioning protrusion (61) for inserting and positioning with the second hollow guide post (34). The positioning protrusion (61) has a sealing ring (62) on its outer side for sealing against the lower end of the second hollow guide post (34).

10. A vacuum cleaner, characterized in that, Includes the dust cup filter self-cleaning structure as described in any one of claims 1-9.

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