Self-cleaning carding filter screen structure of dust collector

Abstract

The utility model discloses a self-cleaning carding filter screen structure of a dust collector, which comprises a filter screen component, a cleaning component and a cleaning component, the filter screen bracket comprises a first positioning ring, a filter screen supporting frame and a first mounting seat, and a locking part is arranged on the first mounting seat; the scraper assembly is rotationally arranged on the filter screen and the filter screen bracket in a sleeving manner, and comprises a second positioning ring, a second mounting seat and a plurality of scrapers arranged between the second positioning ring and the second mounting seat; the second positioning ring sleeves the first positioning ring; the second mounting seat is spliced on the first mounting seat; the scraper clings to the outer surface of the filter screen; and the fastener is arranged on the mounting hole of the second mounting seat in a penetrating manner and is locked and positioned in the locking opening of the locking part. The self-cleaning dust collector filter screen can solve the problem that an existing dust collector filter screen cannot meet the convenient, efficient and environment-friendly self-cleaning requirement of the filter screen.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum cleaners, in particular to a self-cleaning and combing filter screen structure of a vacuum cleaner. Background Art

[0002] Vacuum cleaners can be divided into upright, horizontal and portable types according to their structures. The working principle of a vacuum cleaner is that an electric motor drives the blades to rotate at a high speed, generating a negative air pressure in a sealed housing to suck dust debris. Subsequently, the filter screen intercepts and collects the dust debris, and the purified air is discharged accordingly. Vacuum cleaners are mainly divided into three types: household vacuum cleaners, commercial vacuum cleaners and industrial vacuum cleaners.

[0003] At present, with the development of the vacuum cleaner field, basic functions such as dust collection, filtration, and air diversion, as well as corresponding designs and products, have been relatively mature, and functions such as easy disassembly and storage are also constantly optimized and improved. However, there are still many obvious defects in the convenience design of cleaning the filter screen structure in existing vacuum cleaners:

[0004] ① For some products, the entire dust cup needs to be disassembled and the filter screen structure needs to be taken out for manual or additional equipment cleaning, with low efficiency;

[0005] ② Some use an internal drive mechanism or a linkage member extending outside the vacuum cleaner to drive the corresponding cleaning components to realize the self-cleaning function inside the vacuum cleaner. However, the cleaning method of the cleaning components for the filter screen is relatively single, with low cleaning efficiency and quality, and requires additional energy consumption, unable to meet the convenient and green self-cleaning needs of the filter screen. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a self-cleaning and combing filter screen structure of a vacuum cleaner in order to solve the problem that the filter screen of the existing vacuum cleaner cannot meet the convenient, efficient and green self-cleaning needs of the filter screen.

[0007] In order to achieve the above purpose, the utility model adopts the following technical scheme: A self-cleaning and combing filter screen structure of a vacuum cleaner, comprising:

[0008] A filter screen assembly, including a filter screen support and a filter screen, and the filter screen is sleeved on the filter screen support;

[0009] The filter screen support includes a first positioning ring, a filter screen support frame and a first mounting seat, and a locking portion is arranged on the first mounting seat;

[0010] A scraping blade assembly, which is rotatably sleeved on the filter screen and the filter screen support, includes a second positioning ring, a second mounting seat and a plurality of scraping blades arranged between the second positioning ring and the second mounting seat;

[0011] The second positioning ring is sleeved on the first positioning ring;

[0012] The second mounting seat is fitted together on the first mounting seat;

[0013] The scraping blade is closely attached to the outer surface of the filter screen;

[0014] A fastener is inserted through the mounting hole of the second mounting seat and locked and positioned in the locking opening of the locking portion.

[0015] As a further description of the above technical solution:

[0016] Both the filter screen assembly and the scraping blade assembly are conical structures;

[0017] The filter screen support frame includes a third positioning ring arranged at the top of the first positioning ring, a fourth positioning ring arranged at the bottom of the first mounting seat, and a support rod connecting the third positioning ring and the fourth positioning ring;

[0018] The inclination angles of the third positioning ring, the support rod, and the fourth positioning ring increase in sequence;

[0019] The bottom and top of the filter screen are seamlessly fitted on the third positioning ring and the fourth positioning ring respectively.

[0020] As a further description of the above technical solution:

[0021] The scraping blade is spirally arranged between the second positioning ring and the second mounting seat.

[0022] As a further description of the above technical solution:

[0023] A bearing is arranged in the mounting hole, and the fastener is inserted through the bearing.

[0024] As a further description of the above technical solution:

[0025] A sliding groove is arranged along the entire length of the side of the scraping blade, and a counterweight slider is slidably connected to the sliding groove;

[0026] Elastic scraping strips are connected between the counterweight sliders of adjacent scraping blades.

[0027] As a further description of the above technical solution:

[0028] The counterweight slider includes an inner slider and a support block, and the inner slider is a spherical structure;

[0029] The inner slider is correspondingly slidably arranged in the spherical sliding groove;

[0030] The support block is elastically supported outside the sliding groove.

[0031] As a further description of the above technical solution:

[0032] A first flapping component is arranged outside the wiper blade assembly;

[0033] The first flapping component includes a first hinged section, a first flapping rod and a linkage block at the end of the first hinged section;

[0034] The first hinged section is hinged on the first hinge seat of the second positioning ring through a first hinge shaft;

[0035] The moving range of the first flapping rod extends into the wiper blade assembly;

[0036] The included angle between the first flapping rod and the first hinged section is smaller than the generatrix angle of the cone formed by the second positioning ring and several wiper blades;

[0037] A ring-shaped structure corresponding to the linkage block is arranged on the first positioning ring.

[0038] As a further description of the above technical solution:

[0039] The ring-shaped structure is a circular tooth ring;

[0040] A linkage notch is arranged on the inner end surface of the linkage block;

[0041] An avoidance opening extends from the linkage notch towards the first hinge seat;

[0042] A wedge-shaped or arc-shaped receiving surface corresponding to the circular tooth ring extends from the side of the linkage notch.

[0043] As a further description of the above technical solution:

[0044] A second flapping component is arranged inside the filter screen support;

[0045] The second flapping component includes a second hinged section and a second flapping rod at the end of the second hinged section close to the filter screen;

[0046] The second hinged section is hinged on the second hinge seat of the first positioning ring through a second hinge shaft;

[0047] The moving range of the second flapping rod extends to the inner surface of the filter screen;

[0048] The included angle between the second hinged section and the second flapping rod is larger than the generatrix angle of the first positioning ring and the filter screen support frame;

[0049] Magnets are arranged on the second flapping component, and several magnets are arranged at intervals along the circumferential direction of the second positioning ring.

[0050] As a further description of the above technical solution:

[0051] A buffer pad is arranged between the first positioning ring and the inner surface of the second hinged section.

[0052] In summary, due to the adoption of the above technical solution, the utility model has the following advantages compared with the prior art:

[0053] Beneficial effects:

[0054] 1. The self-cleaning combing filter structure of the vacuum cleaner of the present invention fully fits and shapes the filter through the sandwich structure composed of the filter bracket, the filter, and the scraper assembly, ensuring that there is no gap at the connection with the adjacent structure, ensuring a stable dust filtering effect. The filter bracket and the scraper assembly are end-face spliced and locked by fasteners, wherein the scraper assembly can rotate freely on the filter to scrape and self-clean the dust trapped on its outer surface. It is driven by the main airflow formed outside the filter structure when the vacuum cleaner is in use to achieve rotation drive without increasing additional energy consumption. This design realizes the simultaneous dust filtering and filter cleaning, reduces the degree of filter blockage, ensures efficient filtration, and greatly reduces the frequency of manual cleaning of the filter through the self-cleaning function.

[0055] 2. Based on the scraper assembly, a counterweight slider and an elastic scraper strip are designed to realize a two-way scraping structure on the filter, thereby improving the coverage of dust and hair cleaning. When the scraper assembly rotates, the counterweight slider slides along the slide slot due to the centrifugal effect of the rotation. The elastic scraper strip is adaptively adjusted in length based on the position of the counterweight sliders at both ends, and scrapes the dust and hair on the filter on the moving path, causing them to form a ball and detach from the filter, and then settle and collect by themselves due to airflow and gravity. This design mainly operates when the airflow velocity changes, such as when the internal negative pressure changes frequently and with a large amplitude when the vacuum cleaner is turned on or off, thereby realizing self-cleaning before and after use, avoiding poor filtering effect caused by residual dirt on the filter before use, and residual dirt after use, which causes dirt to penetrate into the filter when the vacuum cleaner is idle, affecting subsequent use.

[0056] 3. When the scraper assembly and the filter bracket rotate relative to each other, the teeth and tooth grooves of the spherical gear ring can push the linkage block and act alternately without contact, so that the first beating rod rotates toward the filter, and with the centrifugal effect or the torsion spring arranged at the hinge of the first beating assembly, the first beating rod rotates back to the filter, thereby achieving reciprocating beating of the filter, and dust and hair are beaten out and removed from the filter; the second beating assembly is affected by gravity or the torsion spring at the hinge, and rotates back to the filter. When the magnet on the second positioning ring rotates, it and the magnet on the second beating assembly are attracted to each other, so that the second beating assembly rotates toward the filter, thereby achieving the beating and dust cleaning effects on its inner surface.

[0057] 4. By driving the wiper blade assembly to rotate through the above-mentioned air flow, dust and hair on the filter screen are shaved and combed in the horizontal direction. Meanwhile, the counterweight slider drives the vertical sliding of the elastic wiper strip to realize the two-way self-cleaning and combing of dust and hair on the filter screen. The two flapping assemblies are designed to pat and remove the dust embedded in the filter screen holes, thus realizing the green and three-dimensional cleaning of the filter screen without additional energy consumption and ensuring the efficient self-cleaning function of the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without creative efforts.

[0059] Figure 1 FIG. is a schematic structural diagram of an embodiment of a self-cleaning and combing filter screen structure of a vacuum cleaner.

[0060] Figure 2 FIG. is an exploded view of an embodiment of a self-cleaning and combing filter screen structure of a vacuum cleaner.

[0061] Figure 3 FIG. is a top view of another embodiment of a self-cleaning and combing filter screen structure of a vacuum cleaner in a general state.

[0062] Figure 4 is Figure 3 an enlarged view of part A in

[0063] Figure 5 FIG. is a top view of another embodiment of a self-cleaning and combing filter screen structure of a vacuum cleaner in a use state.

[0064] Figure 6 FIG. is a sectional view of another embodiment of a self-cleaning and combing filter screen structure of a vacuum cleaner in a use state Figure 1 .

[0065] Figure 7 is Figure 6 an enlarged view of part B in

[0066] Figure 8 FIG. is a sectional view of another embodiment of a self-cleaning and combing filter screen structure of a vacuum cleaner in another use state Figure 1 .

[0067] Figure 9 FIG. is a sectional view of another embodiment of a self-cleaning and combing filter screen structure of a vacuum cleaner in a use state Figure 2 .

[0068] Figure 10 A cross-sectional view of another embodiment of a self-cleaning combing filter structure for a vacuum cleaner in another use state Figure 2 .

[0069] Legend:

[0070] 1. filter support; 11. first positioning ring; 111. second hinge seat; 112. second hinge shaft; 113. buffer pad; 12. filter support frame; 121. third positioning ring; 122. support rod; 123. fourth positioning ring; 13. first mounting seat; 131. locking opening; 132. locking part;

[0071] 2. Filter;

[0072] 3. scraper assembly; 31. second positioning ring; 311. first hinge seat; 312. first hinge shaft; 32. scraper; 321. slide groove; 33. second mounting seat; 331. mounting hole;

[0073] 4. Fasteners; 5. Bearings;

[0074] 6. Counterweight slider; 61. Inner slider; 62. Support block;

[0075] 7. Elastic scraper strip;

[0076] 8. First beating assembly; 81. First hinged section; 82. First beating rod; 83. Linkage block; 831. Linkage notch; 832. Avoidance opening; 833. Undertaking surface;

[0077] 9. Ring structure:

[0078] 10. Second beating assembly; 101. Second hinged section; 102. Second beating rod. DETAILED DESCRIPTION

[0079] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0080] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0081] Accordingly, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0082] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0083] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "inner", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0084] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and limited, the terms "arranged", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0085] Embodiment 1:

[0086] Please refer to Figure 1-2 , the present utility model provides a technical solution: a self-cleaning and combing filter structure for a vacuum cleaner, including:

[0087] A filter assembly, including a filter support 1 and a filter 2, wherein the filter 2 is sleeved on the filter support 1;

[0088] The filter support 1 includes a first positioning ring 11, a filter support frame 12, and a first mounting seat 13;

[0089] A locking portion 132 is provided on the first mounting seat 13;

[0090] A blade assembly 3, which is rotatably sleeved on the filter 2 and the filter support 1, includes a second positioning ring 31, a second mounting seat 33, and a plurality of blades 32 disposed between the second positioning ring 31 and the second mounting seat 33;

[0091] The second positioning ring 31 is sleeved on the first positioning ring 11;

[0092] The second mounting seat 33 is assembled on the first mounting seat 13;

[0093] The scraper 32 is in close contact with the outer surface of the filter screen 2;

[0094] In this embodiment, the filter screen 2 is made of wear-resistant material;

[0095] The fastener 4 is inserted into the mounting hole 331 of the second mounting seat 33 and locked and positioned in the locking opening 131 of the locking portion 132. The locking and positioning method adopts an insert-type clamping or a screw connection.

[0096] The self-cleaning combing filter structure of a vacuum cleaner of this embodiment is to fully fit and shape the filter 2 through the sandwich structure composed of the filter bracket 1, the filter 2, and the scraper assembly 3, to ensure that there is no gap at the connection with the adjacent structure, and to ensure a stable dust filtering effect. The filter bracket 1 and the scraper assembly 3 are end-face spliced and locked and shaped by the fastener 4, wherein the scraper assembly 3 can rotate freely on the filter 2 to scrape and self-clean the dust trapped on its outer surface. It is driven by the main airflow formed outside the filter structure when the vacuum cleaner is used to achieve rotation drive without increasing additional energy consumption. Through this design, dust filtering and filter cleaning are carried out simultaneously, the degree of filter blockage is reduced, and efficient filtration is ensured. And through the self-cleaning function, the frequency of manual cleaning of the filter is greatly reduced.

[0097] In this embodiment, the filter assembly and the scraper assembly 3 are both conical structures, thereby improving the air intake and filtration efficiency of the filter structure, ensuring high filtration efficiency, low resistance and stable air flow;

[0098] The filter screen support frame 12 includes a third positioning ring 121 disposed on the top of the first positioning ring 11, a fourth positioning ring 123 disposed on the bottom of the first mounting seat 13, and a support rod 122 connecting the third positioning ring 121 and the fourth positioning ring 123; the support rod 122 fully supports the inner side of the filter screen 2;

[0099] The inclination angles of the third positioning ring 121, the support rod 122, and the fourth positioning ring 123 increase in sequence, and the bottom and top of the filter 2 are seamlessly spliced on the third positioning ring 121 and the fourth positioning ring 123. This design requires the corresponding slope cutting processing of the inner sides of the upper and lower surfaces of the filter 2 to form a V-shaped cross-sectional structure on its end face to ensure a tight fit, avoid air leakage at the splicing, and interference between the filter and other structures, thereby ensuring the filtering quality of the filter 2.

[0100] The scraping blade 32 is spirally arranged between the second positioning ring 31 and the second mounting seat 33. In addition, in order to further improve the stability of the thrust formed by the air flow on the scraping blade assembly 3 and the conversion rate of the torque formed by the air flow on the scraping blade assembly 3 to its rotation speed, a corresponding diversion structure design is carried out on the surface of the scraping blade 32 based on the flow direction of the main air flow obtained through simulation and calculation.

[0101] A bearing 5 is arranged in the mounting hole 331, and the fastener 4 is passed through the bearing 5 to improve the rotation speed of the scraping blade assembly 3 on the filter screen 2 and the self-cleaning rate of dust.

[0102] The working principle of the self-cleaning and combing filter screen structure of a vacuum cleaner in this embodiment is as follows: When the vacuum cleaner starts to operate, an air flow is formed at the filter screen structure from the scraping blade assembly 3 towards the filter screen support 1. When the air flow tangentially flows through the scraping blade assembly 3, a tangential thrust is generated on the scraping blade 32, causing the scraping blade assembly 3 to rotate along the same axis as the filter screen 2. While collecting dust and filtering, the dust and hair intercepted on its outer surface are shaved and self-cleaned, thereby ensuring the efficient filtration of the filter screen 2.

[0103] Embodiment Two:

[0104] Please refer to Figure 3-5 , on the basis of the above Embodiment One, through the scraping in the horizontal direction of the filter screen 2, the scraping direction is single, and certain dust and hair residues will be formed at the concave and convex structures on the surface of the filter screen 2. Therefore, a two-way scraping structure is planned to be designed to improve the coverage range of dust and hair cleaning. Preferably, a sliding groove 321 is provided along the entire length of the side of the scraping blade 32, and a counterweight slider 6 is slidably connected to the sliding groove 321;

[0105] An elastic scraping strip 7 is connected between the counterweight sliders 6 of adjacent scraping blades 32. Through the rotational movement of the scraping blade assembly 3, based on the centrifugal force, the synchronous sliding of the counterweight slider 6 on the sliding groove 321 can be realized, achieving two-way filter screen scraping and self-cleaning without additional energy consumption.

[0106] The counterweight slider 6 includes an inner slider 61 and a support block 62;

[0107] The inner slider 61 is of a spherical structure, and the inner slider 61 is correspondingly slidably arranged in the spherical sliding groove 321, reducing the sliding resistance between the two, thereby improving the sliding stability and flexibility of the counterweight slider 6 and ensuring the efficient operation of the two-way filter screen self-cleaning structure;

[0108] The support block 62 is elastically supported outside the sliding groove 321. Through this design, in cooperation with the spherical sliding structure of the counterweight slider 6 and the sliding groove 321, under the influence of the air flow on the counterweight slider 6 and the elastic scraping strip 7, more flexible sliding and vertical scraping of the filter screen 2 can be realized.

[0109] The working principle of the self-cleaning combing filter structure of a vacuum cleaner of this embodiment is as follows: when the scraper assembly 3 rotates, the weight slider 6 slides along the slide groove due to the centrifugal effect of the rotation, and the elastic scraper strip 7 adjusts its length adaptively based on the position of the weight sliders 6 at both ends, and scrapes the dust and hair on the filter on the moving path, so that they are grouped and separated from the filter 2, and are automatically settled and collected by airflow and gravity. This design mainly acts when the airflow velocity changes, such as when the internal negative pressure changes frequently and with a large amplitude when the vacuum cleaner is turned on or off, thereby achieving self-cleaning before and after use, avoiding the poor filtering effect caused by the residual dirt on the filter before use, and the residual dirt after use, so that when the vacuum cleaner is idle, the dirt penetrates into the filter, affecting the subsequent use.

[0110] Embodiment three:

[0111] See also Figure 6-8 On the basis of the above-mentioned embodiment 1, in addition to the shaving structure on the surface of the filter 2, dust and hair are guided by the airflow, filtered by the filter 2, and trapped and embedded in the filter 2, so it is necessary to perform a deashing process in the normal direction of the filter. Preferably, a first beating assembly 8 is arranged outside the scraper assembly 3, and the first beating assembly 8 includes a first hinged section 81 and a first beating rod 82 and a linkage block 83 at the end of the first hinged section 81;

[0112] The first hinged section 81 is hinged to the first hinged seat 311 of the second positioning ring 31 via a first hinged shaft 312:

[0113] The moving range of the first beating rod 82 extends into the scraper assembly 3, and the angle between the first beating rod 82 and the first hinged section 81 is smaller than the generatrix angle of the cone formed by the second positioning ring 31 and a plurality of scrapers 32. The above design enables the first beating assembly 8 to move in the normal direction of the filter 2, thereby beating the filter 2, and the filter outside the beating area is affected by the vibration, thereby completing the beating and removal of dust and hair.

[0114] Next, the state switching driving device of the first beating component 8 is designed, and the first positioning ring 11 is provided with a ring structure 9 corresponding to the linkage block 83;

[0115] The annular structure 9 is a spherical tooth ring, and the inner end surface of the linkage block 83 is provided with a linkage notch 831 .

[0116] The above structure enables that when the scraper assembly 3 and the filter bracket 1 rotate relative to each other, the teeth and tooth grooves of the spherical gear ring can push the linkage block 83 and act alternately without contact, so that the first beating rod 82 rotates toward the filter 2. In conjunction with the centrifugal action or the torsion spring arranged at the hinge of the first beating assembly 8, the first beating rod 82 rotates back to the filter 2, thereby realizing reciprocating beating of the filter 2, and dust and hair are beaten out and removed from the filter 2.

[0117] The linkage notch 831 extends toward the first hinge seat 311 to form a relief opening 832 to prevent the first beating assembly 8 from interfering with other components when rotating.

[0118] A wedge-shaped or arc-shaped receiving surface 833 corresponding to the circular gear ring is extended from the side of the linkage notch 831 to improve the receiving stability between the teeth of the circular gear ring and the linkage block 83.

[0119] Embodiment 4:

[0120] See also Figure 9-10 On the basis of the above-mentioned embodiment 1, similar to the beating mechanism of the outer surface of the filter screen 2 in embodiment 3, a beating and dust cleaning design is performed on the inner surface thereof. Preferably, a second beating assembly 10 is arranged in the filter screen support 1, and the second beating assembly 10 comprises a second hinged section 101 and a second beating rod 102 of the second hinged section 101 close to one end of the filter screen 2;

[0121] The second hinged section 101 is hinged to the second hinged seat 111 of the first positioning ring 11 via a second hinged shaft 112;

[0122] The moving range of the second beating rod 102 extends to the inner surface of the filter screen 2, and the angle between the second hinged section 101 and the second beating rod 102 is greater than the generatrix angle between the first positioning ring 11 and the filter screen support frame 12;

[0123] The second beating assembly 10 is provided with a magnet, and a plurality of magnets are provided at intervals along the circumference of the second positioning ring 31 .

[0124] When the above structure is in use, the second beating component 10 rotates away from the filter 2 due to gravity or the torsion spring at the hinge. When the magnet on the second positioning ring 31 rotates, it is magnetically attracted to the magnet on the second beating component 10, causing the second beating component 10 to rotate toward the filter 2, thereby beating and cleaning the inner surface of the filter 2.

[0125] A buffer pad 113 is provided between the first positioning ring 11 and the inner surface of the second hinged section 101 to reduce the collision between the flapping assembly and other structures during movement. The structure can also be applied to the corresponding structure of the third embodiment to reduce the loss of structural strength and realize the long-term and efficient operation of the cleaning and combing structures of the filter screen 2.

[0126] When the designs of the above four embodiments are integrated, the working principle of the corresponding self-cleaning combing filter structure of a vacuum cleaner is as follows: when the vacuum cleaner starts to run, an airflow from the scraper assembly 3 toward the filter bracket 1 is formed at the filter structure, and when the airflow flows tangentially through the scraper assembly 3, a tangential thrust is generated on the scraper 32, so that the scraper assembly 3 rotates along the same axis as the filter 2, and while collecting and filtering dust, the dust and hair trapped on the outer surface are shaved and self-cleaned, thereby ensuring efficient filtration of the filter 2;

[0127] During this period, when the scraper assembly 3 rotates, the weight slider 6 slides along the slide groove due to the centrifugal effect of the rotation, and the elastic scraper strip 7 adjusts its length adaptively based on the position of the weight sliders 6 at both ends, and scrapes the dust and hair on the filter screen on the moving path, so that they are clumped and separated from the filter screen 2, and are automatically settled and collected by airflow and gravity. This design mainly works when the airflow velocity changes, such as when the internal negative pressure changes frequently and with large amplitude when the vacuum cleaner is turned on or off, thereby achieving self-cleaning before and after use, avoiding poor filtering effect caused by residual dirt on the filter screen before use, and residual dirt after use, so that when the vacuum cleaner is idle, dirt penetrates into the filter screen, affecting subsequent use;

[0128] When the scraper assembly 3 and the filter support 1 rotate relative to each other, the teeth and tooth grooves of the circular gear ring can push the linkage block 83 and perform contactless alternating action, so that the first beating rod 82 rotates toward the filter 2, and the first beating rod 82 rotates away from the filter 2 in cooperation with the centrifugal action or the torsion spring provided at the hinge of the first beating assembly 8, so as to achieve reciprocating beating of the filter 2, and dust and hair are beaten out and removed from the filter 2;

[0129] The second beating component 10 is affected by gravity or the torsion spring at the hinge and rotates away from the filter 2. When the magnet on the second positioning ring 31 rotates, it is magnetically attracted to the magnet on the second beating component 10, causing the second beating component 10 to rotate toward the filter 2, thereby beating and cleaning the inner surface of the filter 2.

[0130] The scraper assembly 3 is driven to rotate by the above-mentioned airflow to shave and comb the dust and hair on the filter 2 in the horizontal direction. Simultaneously, the counterweight slider 6 drives the elastic scraper strip 7 to slide vertically, thereby realizing two-way dust and hair self-cleaning and combing of the filter 2. The two beating assemblies are designed to beat out and remove the dust embedded in the filter holes, thereby realizing three-dimensional cleaning of the filter 2 and ensuring the efficient self-cleaning function of the filter.

[0131] In summary, due to the adoption of the above technical solution, the self-cleaning combing filter structure of a vacuum cleaner in this embodiment has the following beneficial effects compared with the prior art:

[0132] 1. The self-cleaning combing filter structure of the vacuum cleaner of the present invention fully fits and shapes the filter through the sandwich structure composed of the filter bracket, the filter, and the scraper assembly, ensuring that there is no gap at the connection with the adjacent structure, ensuring a stable dust filtering effect. The filter bracket and the scraper assembly are end-face spliced and locked by fasteners, wherein the scraper assembly can rotate freely on the filter to scrape and self-clean the dust trapped on its outer surface. It is driven by the main airflow formed outside the filter structure when the vacuum cleaner is in use to achieve rotation drive without increasing additional energy consumption. This design realizes the simultaneous dust filtering and filter cleaning, reduces the degree of filter blockage, ensures efficient filtration, and greatly reduces the frequency of manual cleaning of the filter through the self-cleaning function.

[0133] 2. Based on the scraper assembly, a counterweight slider and an elastic scraper strip are designed to realize a two-way scraping structure on the filter, thereby improving the coverage of dust and hair cleaning. When the scraper assembly rotates, the counterweight slider slides along the slide slot due to the centrifugal effect of the rotation. The elastic scraper strip is adaptively adjusted in length based on the position of the counterweight sliders at both ends, and scrapes the dust and hair on the filter on the moving path, causing them to form a ball and detach from the filter, and then settle and collect by themselves due to airflow and gravity. This design mainly operates when the airflow velocity changes, such as when the internal negative pressure changes frequently and with a large amplitude when the vacuum cleaner is turned on or off, thereby realizing self-cleaning before and after use, avoiding poor filtering effect caused by residual dirt on the filter before use, and residual dirt after use, which causes dirt to penetrate into the filter when the vacuum cleaner is idle, affecting subsequent use.

[0134] 3. When the scraper assembly and the filter bracket rotate relative to each other, the teeth and tooth grooves of the spherical gear ring can push the linkage block and act alternately without contact, so that the first beating rod rotates toward the filter, and with the centrifugal effect or the torsion spring arranged at the hinge of the first beating assembly, the first beating rod rotates back to the filter, thereby achieving reciprocating beating of the filter, and dust and hair are beaten out and removed from the filter; the second beating assembly is affected by gravity or the torsion spring at the hinge, and rotates back to the filter. When the magnet on the second positioning ring rotates, it and the magnet on the second beating assembly are attracted to each other, so that the second beating assembly rotates toward the filter, thereby achieving the beating and dust cleaning effects on its inner surface.

[0135] 4. The scraper assembly is driven to rotate by the airflow to shave and comb the dust and hair in the horizontal direction of the filter. Simultaneously, the counterweight slider drives the elastic scraper strip to slide vertically to achieve two-way self-cleaning and combing of dust and hair on the filter. The two beating assemblies are designed to beat out and remove the dust embedded in the filter holes, thereby achieving green and three-dimensional cleaning of the filter without additional energy consumption, ensuring the efficient self-cleaning function of the filter.

[0136] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A self-cleaning and combing filter structure for a vacuum cleaner, characterized in that, Comprising: A filter screen assembly, including a filter screen support and a filter screen. The filter screen is sleeved on the filter screen support. The filter screen support includes a first positioning ring, a filter screen support frame, and a first mounting seat. A locking portion is provided on the first mounting seat; A scraping blade assembly, which is rotatably sleeved on the filter screen and the filter screen support, includes a second positioning ring, a second mounting seat, and a plurality of scraping blades disposed between the second positioning ring and the second mounting seat. The second positioning ring is sleeved on the first positioning ring, the second mounting seat is fitted on the first mounting seat, and the scraping blades are closely attached to the outer surface of the filter screen; A fastener, which is passed through the mounting hole of the second mounting seat and locked and positioned in the locking opening of the locking portion.

2. The self-cleaning and combing filter net structure of a vacuum cleaner according to claim 1, characterized in that, Both the filter screen assembly and the scraping blade assembly are conical structures. The filter screen support frame includes a third positioning ring provided at the top of the first positioning ring, a fourth positioning ring provided at the bottom of the first mounting seat, and a support rod connecting the third positioning ring and the fourth positioning ring. The inclination angles of the third positioning ring, the support rod, and the fourth positioning ring increase in sequence. The bottom and top of the filter screen are seamlessly fitted on the third positioning ring and the fourth positioning ring respectively.

3. The self-cleaning and carding filter structure of a vacuum cleaner according to claim 1, characterized in that, The scraping blades are arranged in a spiral shape between the second positioning ring and the second mounting seat.

4. The self-cleaning and combing filter structure of a vacuum cleaner according to claim 1, characterized in that, A bearing is provided in the mounting hole, and the fastener is passed through the bearing.

5. The self-cleaning and carding filter structure of a vacuum cleaner according to claim 1, wherein A chute is provided along the entire length of the side surface of the scraping blade. A counterweight slider is slidably connected to the chute, and an elastic scraping strip is connected between the counterweight sliders of adjacent scraping blades.

6. The self-cleaning and combing filter net structure of a vacuum cleaner according to claim 5, characterized in that, The counterweight slider includes an inner slider and a support block. The inner slider is a spherical structure, and the inner slider is correspondingly slidably arranged in the spherical chute. The support block is elastically supported outside the chute.

7. The self-cleaning and carding filter net structure of a vacuum cleaner according to claim 1, wherein, A first flapping assembly is provided outside the scraping blade assembly. The first flapping assembly includes a first hinged section, a first flapping rod and a linkage block at the end of the first hinged section. The first hinged section is hinged on the first hinge seat of the second positioning ring through a first hinge shaft. The moving range of the first flapping rod extends into the scraping blade assembly. The included angle between the first flapping rod and the first hinged section is smaller than the generatrix angle of the cone formed by the second positioning ring and a plurality of scraping blades. A ring-shaped structure corresponding to the linkage block is provided on the first positioning ring.

8. The self-cleaning and combing filter structure of a vacuum cleaner according to claim 7, characterized in that, The ring-shaped structure is a circular tooth ring. A linkage notch is provided on the inner end surface of the linkage block. An avoidance opening extends from the linkage notch towards the first hinge seat. A wedge-shaped or arc-shaped receiving surface corresponding to the circular tooth ring extends from the side surface of the linkage notch.

9. The self-cleaning and combing filter structure of a vacuum cleaner according to claim 1, characterized in that, A second flapping assembly is provided inside the filter screen support. The second flapping assembly includes a second hinged section and a second flapping rod at the end of the second hinged section close to the filter screen. The second hinged section is hinged on the second hinge seat of the first positioning ring through a second hinge shaft. The moving range of the second flapping rod extends to the inner surface of the filter screen. The included angle between the second hinged section and the second flapping rod is larger than the generatrix angle of the first positioning ring and the filter screen support frame. Magnets are provided on the second flapping assembly, and a plurality of magnets are arranged at intervals along the circumference of the second positioning ring.

10. The self-cleaning and carding filter structure of a vacuum cleaner according to claim 9, characterized in that, A buffer pad is provided between the first positioning ring and the inner surface of the second hinged section.

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