Filter assembly for dust collector and use method of filter assembly

Abstract

The invention belongs to the technical field of dust separation, and particularly relates to an auxiliary device for filtering, in particular to a filtering assembly for a dust collector and a using method thereof.According to the filtering assembly for the dust collector, an abutting piece is arranged in a wedge-shaped embedded block, and wall bodies on the two sides of the wedge-shaped embedded block are pulled inwards through the abutting piece; therefore, the width of the wedge-shaped embedded block is reduced, and the sealing ring and the filter disc are convenient to disassemble and assemble; after the wedge-shaped embedded block is inserted into the embedded hole, the side wall of the wedge-shaped embedded block and the inner wall of the embedded hole are clamped through the abutting piece, the gap at the clamping position is reduced, and therefore the problem that the gap at the clamping position is increased due to the fact that the sealing ring is disassembled for multiple times is solved while quick disassembly is not affected.

Description

Technical Field

[0001] The present invention belongs to the technical field of dust separation, and particularly relates to an auxiliary device for filtration, and more particularly to a filter assembly for a vacuum cleaner and a method for using the same. Background Art

[0002] The filter element of a vacuum cleaner is one of the core components of the vacuum cleaner. Its main function is to filter the inhaled dust, dirt, debris and fine particles to prevent secondary pollution of the air.

[0003] In related technologies, in order to improve the filtration accuracy of the filter element, a HEPA filter element is used for filtration. Since the pore density of the filter material of the HEPA filter element is relatively high, it is easily blocked by dust and needs to be cleaned and replaced regularly. In order to facilitate the disassembly and assembly of the filter, a snap-fit method is generally used. The filter disc at the bottom of the filter is snap-fitted to the bottom of the filter through a sealing ring to complete the fixation of the filter disc. After multiple replacements, the gap at the snap-fit position between the filter disc and the sealing ring will gradually increase, resulting in a deterioration of the sealing effect between the sealing ring and the bottom of the filter, and thus causing gas to enter the filter element through the gap, resulting in a reduction in the filtration accuracy of the filter.

[0004] Therefore, how to solve the problem of the reduction of the sealing effect of the sealing ring while not affecting the disassembly of the filter element is a technical problem that needs to be solved urgently at present.

[0005] It should be noted that the above information disclosed in this background art section is only used to understand the background art of the concept of this application. Therefore, the above description is not considered as information of the prior art. Summary of the Invention

[0006] The embodiments of the present disclosure at least provide a filter assembly for a vacuum cleaner and a method for using the same.

[0007] In a first aspect, the embodiments of the present disclosure provide a filter assembly for a vacuum cleaner, including: A cylindrical bracket; A filter cartridge, which is sleeved on the side wall of the cylindrical bracket; A sealing ring, which is arranged at the bottom of the cylindrical bracket; A filter disc, which is snap-fitted on the sealing ring and is connected to the cylindrical bracket through the sealing ring; Wherein, a wedge-shaped insertion block is arranged at the top of the sealing ring; An insertion hole is arranged at the bottom of the cylindrical bracket corresponding to the wedge-shaped insertion block; A groove is arranged at the top of the wedge-shaped insertion block; A holding member is arranged in the groove; The holding member is adapted to pull the walls on both sides of the wedge-shaped insertion block inward to reduce the width of the wedge-shaped insertion block; the holding member is adapted to clamp the side wall of the wedge-shaped insertion block against the inner wall of the insertion hole after the wedge-shaped insertion block is inserted into the insertion hole.

[0008] In an alternative embodiment, the holding member includes: A plug rod, one end of which passes through the sealing ring and extends into the groove of the wedge-shaped insertion block, and the other end is sleeved with a return spring; The sealing ring is provided with a mounting groove for mounting the return spring; One end of the return spring abuts against the mounting groove, and the other end is fixedly connected to the plug rod; Two support rods, wherein one end of the support rod is hinged to one end of the plug rod extending into the groove, and the other end of the support rod is hinged to the wall body on the corresponding side of the wedge-shaped insertion block.

[0009] In an alternative embodiment, the rotation angle of the support rod is a, and the range of a is between 30° and 85°; Wherein, the rotation angle a refers to the included angle between the axis of the support rod and the axis of the plug rod.

[0010] In an alternative embodiment, the bottom surface of the sealing ring is provided with an annular flange; The annular flange extends inward along the axial direction of the sealing ring, and forms a slot for inserting the filter disc with the bottom of the sealing ring; The end of the plug rod of the holding member away from the groove abuts against the annular flange.

[0011] In an alternative embodiment, the side wall of the filter disc is provided with an inclined slot; A sliding column extends radially outward at the mating portion of the plug rod and the inclined slot; The sliding column is inserted into the inclined slot; After the wedge-shaped insertion block is inserted into the insertion hole, by externally rotating the filter disc, the inclined slot is driven to rotate, so as to adjust the distance between the sliding column and the bottom surface of the sealing ring, so that the holding member further clamps the side wall of the wedge-shaped insertion block against the inner wall of the insertion hole, and at the same time clamps the filter disc against the bottom surface of the sealing ring.

[0012] In an alternative embodiment, the side wall of the filter disc is further provided with a chute adapted to the sliding column in the vertical direction; The chute penetrates through the top surface of the filter disc, and the chute is communicated with the inclined slot; When the filter disc is snapped into the card slot of the sealing ring, first align the sliding groove with the sliding column, and then rotate the filter disc by an external force so that the sliding column snaps into the inclined groove and slides along the inclined groove.

[0013] In an alternative embodiment, a sliding groove is provided in the side wall of the filter disc in the vertical direction; A sliding column extends radially outward at the mating portion of the insertion rod and the sliding groove; The sliding column is inserted into the sliding groove, and a plurality of strip-shaped teeth are provided on the side wall of the sliding groove along the sliding direction of the sliding column; When the filter disc is pulled out, the dust on the surfaces of the filter disc, the sealing ring and the filter cylinder is shaken off by the vibration formed by the sliding of the sliding column along the plurality of strip-shaped teeth.

[0014] In an alternative embodiment, a first limiting ring extends axially from the edge end of the top of the cylindrical bracket towards the bottom of the cylindrical bracket; A second limiting ring extends axially from the edge end of the bottom of the cylindrical bracket towards the top of the cylindrical bracket; The top of the filter cylinder is installed between the first limiting ring and the side wall of the cylindrical bracket; The bottom of the filter cylinder is installed on the side wall between the second limiting ring and the cylindrical bracket.

[0015] In an alternative embodiment, the embedding hole is arranged close to the second limiting ring; Moreover, the embedding hole is far from the inner side of the filter cylinder.

[0016] Second, the embodiments of the present disclosure provide a usage method for a filter assembly for a vacuum cleaner as described above, and the usage method includes: During assembly: Put the filter cylinder on the cylindrical bracket; Snap the filter disc onto the sealing ring; Pull the side walls on both sides of the wedge-shaped embedding block inward through the holding member, and then insert the wedge-shaped embedding block into the embedding hole; Clamp the side wall of the wedge-shaped embedding block against the inner wall of the embedding hole through the holding member; During disassembly: Remove the filter disc from the sealing ring; Pull the side walls on both sides of the wedge-shaped embedding block inward through the holding member, and then pull the wedge-shaped embedding block out of the embedding hole; Remove the filter cylinder from the cylindrical bracket.

[0017] The beneficial effects of the present invention are as follows. In the filter assembly for a vacuum cleaner and its usage method, by providing a holding member within the wedge-shaped insertion block, when the wedge-shaped insertion block is inserted into the insertion hole, the holding member pulls the wall bodies on both sides of the wedge-shaped insertion block inward, thereby reducing the width of the wedge-shaped insertion block, and facilitating the disassembly of the sealing ring and the filter disc. After the wedge-shaped insertion block is inserted into the insertion hole, the holding member clamps the side wall of the wedge-shaped insertion block against the inner wall of the insertion hole, reducing the gap at the clamping joint, thus solving the problem of the increasing gap at the clamping joint caused by multiple disassembly of the sealing ring without affecting quick disassembly.

[0018] Other features and advantages of the present invention will be described in the subsequent description, and part of them will become obvious from the description or be understood by implementing the present invention. The objectives and other advantages of the present invention are achieved and obtained by the structures specifically pointed out in the description and the drawings.

[0019] To make the above objectives, features, and advantages of the present invention more obvious and understandable, specific preferred embodiments are hereby given, and in conjunction with the accompanying drawings, the detailed description is as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 Structural schematic diagram of the filter assembly for a vacuum cleaner provided by an embodiment of the present disclosure; Figure 2 Structural schematic diagram of the sealing ring provided by an embodiment of the present disclosure; Figure 3 Cross-sectional view of the filter assembly for a vacuum cleaner provided by an embodiment of the present disclosure; Figure 4 For Figure 3 Enlarged view of part A in Figure 5 Structural schematic diagram of the filter disc provided by an embodiment of the present disclosure; Figure 6 Exploded view of the filter assembly for a vacuum cleaner provided by an embodiment of the present disclosure; Figure 7 Flowchart of the usage method of the filter assembly for a vacuum cleaner during installation provided by an embodiment of the present disclosure; Figure 8 Flowchart of the usage method of the filter assembly for a vacuum cleaner during disassembly provided by an embodiment of the present disclosure.

[0022] In the figure: 100, cylindrical support; 110, embedding hole; 120, first limiting ring; 130, second limiting ring; 140 - support body; 150 - top cover; 200, filter cartridge; 300, sealing ring; 310, wedge-shaped embedding block; 311, groove; 320, abutting member; 321, insertion rod; 322, return spring; 323, support rod; 3231, sliding column; 330, installation groove; 340, annular flange; 350, slot; 400, filter disc; 410, inclined groove; 420, sliding groove; 430, strip teeth. Detailed implementation mode

[0023] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] It has been found through research that in the filter element in the related art, after the filter cartridge and the filter disc are replaced multiple times, the elasticity of the sealing ring used to seal the filter disc and the bottom of the filter element will decrease. As a result, when the clamping block of the sealing ring is clamped to the bottom of the filter element, the gap at the clamping position becomes larger, resulting in an increase in the gap between the sealing ring and the bottom of the filter, and the sealing effect of the sealing ring becomes poor. If the width of the clamping block is increased to reduce the width of the gap, the sealing ring will be clamped too tightly to the bottom of the filter, making it inconvenient to disassemble.

[0025] Based on the above research, the embodiments of the present disclosure provide a filter assembly for a vacuum cleaner and its usage method. By providing a groove 311 at the top of the wedge-shaped embedding block 310 and arranging an abutting member 320 in the groove 311, the abutting member 320 is used to expand or pull inward the side walls of the wedge-shaped embedding block 310, so as to reduce the gap between the wedge-shaped embedding block 310 and the embedding hole 110 while meeting the requirement of quick disassembly.

[0026] Regarding the defects existing in the above solutions, they are all the results obtained by the inventor through practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed by the present disclosure in this article for the above problems should all be the contributions made by the inventor to the present disclosure during the process of the present disclosure.

[0027] It should be noted that similar reference numerals and letters denote similar 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.

[0028] The following will, with reference to the accompanying drawings, elaborate on some embodiments of the present invention. Without conflict, the following embodiments and the features in the embodiments may be combined with each other.

[0029] Please refer to Figure 1 and Figure 2 , at least one embodiment provides a filter assembly for a vacuum cleaner, including the following structures: A cylindrical bracket 100, which is formed by inserting and connecting a top cover 150 and a bracket body 140. When assembling the filter cartridge 200, after separating the bracket body 140 from the top cover 150, the filter cartridge 200 is sleeved on the bracket body 140, and then the top cover 150 is covered on the direct body to complete the installation of the filter cartridge 200. The schematic diagram of the structure after the separation of the top cover 150 and the bracket body 140 of the cylindrical bracket 100 is as shown in Figure 6 shown.

[0030] A filter cartridge 200, which is sleeved on the side wall of the cylindrical bracket 100.

[0031] Specifically, the filter cartridge 200 is a HEPA filter screen, which can capture particles above 0.3 μm.

[0032] A sealing ring 300, which is arranged at the bottom of the cylindrical bracket 100.

[0033] A filter disc 400, which is clamped on the sealing ring 300 and is connected to the cylindrical bracket 100 through the sealing ring 300.

[0034] It should be noted that the filter disc 400 includes a filter screen and a circular ring-shaped frame made of an elastic material for supporting the filter screen, and the filter screen is a HEPA filter screen.

[0035] Please refer to Figure 2 and Figure 3 , a wedge-shaped embedding block 310 is arranged at the top of the sealing ring 300, and an embedding hole 110 is arranged at the corresponding position of the bottom of the cylindrical bracket 100 and the wedge-shaped embedding block 310.

[0036] Among them, the wedge-shaped embedding block 310 is an inverted trapezoid, and the shape of the embedding hole 110 is also an inverted trapezoid, and the sizes of the wedge-shaped embedding block 310 and the embedding hole 110 are adapted. During installation, the wedge-shaped embedding block 310 is inserted into the embedding hole 110, and the installation of the sealing ring 300 can be completed.

[0037] A groove 311 is arranged at the top of the wedge-shaped embedding block 310. By arranging the groove 311, the deformation ability of the wedge-shaped embedding block 310 is improved, so that the wedge-shaped embedding block 310 can be easily clamped into the embedding hole 110 and is convenient for disassembly.

[0038] A holding member 320 is disposed in the groove 311. When the wedge-shaped insertion block 310 is inserted into the insertion hole 110, the holding member 320 pulls the wall bodies on both sides of the wedge-shaped insertion block 310 inward to reduce the width of the wedge-shaped insertion block 310. After the wedge-shaped insertion block 310 is inserted into the insertion hole 110, the holding member 320 clamps the side wall of the wedge-shaped insertion block 310 with the inner wall of the insertion hole 110.

[0039] At the same time, the requirement for the assembly accuracy between the sealing ring 300 and the cylindrical bracket 100 can also be reduced, and the accuracy can be adaptively compensated by the holding member 320.

[0040] During disassembly or installation, the wall bodies on both sides of the wedge-shaped insertion block 310 are pulled inward by the holding member 320, thereby reducing the width of the wedge-shaped insertion block 310, and further facilitating the disassembly or installation of the sealing ring 300 and the filter disc 400. After the wedge-shaped insertion block 310 is inserted into the insertion hole 110, the side wall of the wedge-shaped insertion block 310 is clamped with the inner wall of the insertion hole 110 by the holding member 320, reducing the gap at the clamping joint, thereby solving the problem of the increased gap at the clamping joint caused by multiple disassembly of the sealing ring 300 without affecting quick disassembly.

[0041] It should be noted that during the initial assembly, the range of the gap at the clamping joint is between 0.1 mm and 0.3 mm. When the holding member 320 clamps the side wall of the wedge-shaped insertion block 310 with the inner wall of the insertion hole 110, the gap can be compensated, and the compensation range ≤ 0.5 mm, further reducing the gap. At this time, the range of the gap at the clamping joint is between 0.05 mm and 0.1 mm. After multiple disassembly, when the gap at the clamping joint is not greater than 0.5 mm, it can be compensated by the holding member 320, reducing the risk of dust infiltration, thereby ensuring the filtration accuracy of the filter assembly.

[0042] Please refer to Figure 3 and Figure 4 , the holding member 320 includes the following structure: A plug rod 321, one end of which passes through the sealing ring 300 and extends into the groove 311 of the wedge-shaped insertion block 310, and the other end is sleeved with a return spring 322. The support rod 323 is driven to rotate by the plug rod 321, thereby holding or contracting the wall bodies on both sides of the wedge-shaped insertion block 310.

[0043] The sealing ring 300 is provided with an installation groove 330 for installing the return spring 322. One end of the return spring 322 abuts against the installation groove 330, and the other end is fixedly connected to the plug rod 321.

[0044] By setting the reset spring 322 to reset the position of the insertion rod 321, after the wedge-shaped insertion block 310 is inserted into the insertion hole 110, the insertion rod 321 is reset under the elastic force of the reset spring 322, driving the support rod 323 to expand the wall bodies on both sides of the wedge-shaped insertion block 310, thereby reducing the gap between the wall bodies on both sides of the wedge-shaped insertion block 310 and the insertion hole 110, and improving the sealing performance between the sealing ring 300 and the bottom of the cylindrical bracket 100.

[0045] Two support rods 323, wherein one end of the support rod 323 is hinged to one end of the insertion rod 321 extending into the groove 311, and the other end of the support rod 323 is hinged to the wall body on the corresponding side of the wedge-shaped insertion block.

[0046] The rotation angle of the support rod 323 is a, and the range of a is between 30° and 85°; wherein, the rotation angle a refers to the included angle between the axis of the support rod 323 and the axis of the insertion rod 321. When the insertion rod 321 rises along the Figure 4 direction shown by F in the figure, the rotation angle a decreases, and when the insertion rod 321 descends along the opposite direction of the direction shown by F in the Figure 4 figure, the rotation angle a increases.

[0047] The bottom surface of the sealing ring 300 is provided with an annular flange 340, and the end of the insertion rod 321 of the abutting member 320 away from the groove 311 abuts against the annular flange 340.

[0048] When pushing the insertion rod 321, push the annular flange 340 upward (such as the Figure 4 direction shown by F in the figure), and then push the insertion rod 321 to move upward, so that the rotation angle a of the support rod 323 decreases, and the wall bodies on both sides of the wedge-shaped insertion block 310 contract inward, thereby reducing the width of the wedge-shaped insertion block 310.

[0049] The annular flange 340 is axially inwardly opened along the sealing ring 300, and forms a slot 350 for inserting the filter disc 400 with the bottom of the sealing ring 300. When installing the filter disc 400, the filter disc 400 is snapped into the slot 350, and the filter disc 400 is supported by the annular flange 340.

[0050] Please refer to Figure 4 and Figure 5, a chute 410 is formed on the side wall of the filter disc 400; a sliding column 3231 extends radially outward at the mating position of the insertion rod 321 and the chute 410; the sliding column 3231 is inserted into the chute 410; after the wedge-shaped insertion block 310 is inserted into the insertion hole 110, the filter disc 400 is rotated by an external force to drive the chute 410 to rotate, so as to adjust the distance between the sliding column 3231 and the bottom surface of the sealing ring 300, so that the abutting member 320 further clamps the side wall of the wedge-shaped insertion block 310 and the inner wall of the insertion hole 110, and at the same time clamps the bottom surface of the filter disc 400 and the sealing ring 300.

[0051] Through the cooperation of the chute 410 and the sliding column 3231, on the one hand, the bottom surface of the filter disc 400 and the sealing ring 300 are clamped, reducing the gap between the filter disc 400 and the sealing ring 300, thereby improving the sealing performance between the filter disc 400 and the sealing ring 300; on the other hand, the wedge-shaped insertion block 310 and the insertion hole 110 are clamped, thereby increasing the sealing performance between the sealing ring 300 and the bottom of the filter cartridge 200 bracket. After multiple disassembly, even if the elasticity of the wedge-shaped insertion block 310 weakens, the wedge-shaped insertion block 310 and the insertion hole 110 can be clamped by the abutting member 320, so as not to affect the sealing performance of the sealing ring 300.

[0052] In a preferred embodiment, a chute 420 adapted to the sliding column 3231 is further formed on the side wall of the filter disc 400 in the vertical direction; the chute 420 penetrates through the top surface of the filter disc 400, and the chute 420 communicates with the chute 410.

[0053] When the filter disc 400 is snapped into the card slot of the sealing ring 300, first align the chute 420 with the sliding column 3231, and then rotate the filter disc 400 by an external force, so that the sliding column 3231 is snapped into the chute 410 and slides along the chute 410. The installation of the filter disc 400 is guided by the sliding column 3231 and the chute 420, thus facilitating the installation of the filter disc 400.

[0054] In a preferred embodiment, a plurality of strip teeth 430 are arranged on the side wall of the chute 420 along the sliding direction of the sliding column 3231; when the filter disc 400 is pulled out, the dust on the surfaces of the filter disc 400, the sealing ring 300 and the filter cartridge 200 is shaken off by the vibration formed by the sliding of the sliding column 3231 along the plurality of strip teeth 430.

[0055] The vibration generated by the sliding of the sliding post 3231 over the strip teeth 430 shakes off the dust on the surfaces of the sealing ring 300, the filter disc 400, and the filter cartridge 200, reducing the amount of dust remaining on the surface of the sealing ring 300 during disassembly, thereby reducing the amount of dust in the gap formed by the wedge-shaped insertion block 310 and the insertion hole 110, and further ensuring the sealing performance of the sealing ring 300.

[0056] Please refer to Figure 6 , in an alternative embodiment, a first limiting ring 120 extends axially from the edge end of the top of the cylindrical bracket 100 towards the bottom of the cylindrical bracket 100; a second limiting ring 130 extends axially from the edge end of the bottom of the cylindrical bracket 100 towards the top of the cylindrical bracket 100; the top of the filter cartridge 200 is installed between the first limiting ring 120 and the side wall of the cylindrical bracket 100; the bottom of the filter cartridge 200 is installed between the second limiting ring 130 and the side wall of the cylindrical bracket.

[0057] The insertion hole 110 is arranged close to the second limiting ring 130; and, the insertion hole 110 is away from the inner side of the filter cartridge 200. By providing the first limiting ring 120 and the second limiting ring 130, the amount of dust entering the bottom and top of the filter cartridge 200 is reduced, ensuring the filtering accuracy of the filter cartridge 200. At the same time, by arranging the insertion hole 110 away from the inner wall of the filter cartridge 200, the gas entering the sealing ring 300 along the insertion rod 321 will not enter the interior of the filter cartridge 200, thus not affecting the filtering accuracy of the filter assembly.

[0058] Please refer to Figure 7 and Figure 8 , at least one embodiment further provides a method of using a filter assembly for a vacuum cleaner as described above, and the method of use includes: During assembly: S110, sleeving the filter cartridge 200 on the cylindrical bracket 100; S120, snap-fitting the filter disc 400 onto the sealing ring 300; S130, pulling the side walls on both sides of the wedge-shaped insertion block 310 inward through the holding member 320, and then inserting the wedge-shaped insertion block 310 into the insertion hole 110; S140, clamping the side wall of the wedge-shaped insertion block 310 against the inner wall of the insertion hole 110 through the holding member 320.

[0059] During disassembly: S210, removing the filter disc 400 from the sealing ring 300; S220, pulling the side walls on both sides of the wedge-shaped insertion block 310 inward through the holding member 320, and then pulling the wedge-shaped insertion block 310 out of the insertion hole 110; S230, remove the filter cartridge 200 from the cylindrical support 100.

[0060] In summary, the present invention provides a filter assembly for a vacuum cleaner and a method of using the same. The filter assembly for a vacuum cleaner includes: a cylindrical support 100; a filter cartridge 200 sleeved on the side wall of the cylindrical support 100; a sealing ring 300 disposed at the bottom of the cylindrical support 100; a filter disc 400 snap-connected to the sealing ring 300 and connected to the cylindrical support 100 through the sealing ring 300. Wherein, a wedge-shaped insertion block 310 is provided at the top of the sealing ring 300; an insertion hole 110 is provided at the bottom of the cylindrical support 100 corresponding to the wedge-shaped insertion block 310; a groove 311 is provided at the top of the wedge-shaped insertion block 310; a holding member 320 is provided in the groove 311; by the holding member 320, the wall bodies on both sides of the wedge-shaped insertion block 310 are pulled inward, thereby reducing the width of the wedge-shaped insertion block 310, and further facilitating the disassembly and installation of the sealing ring 300 and the filter disc 400; after the wedge-shaped insertion block 310 is inserted into the insertion hole 110, the side wall of the wedge-shaped insertion block 310 is clamped with the inner wall of the insertion hole 110 by the holding member 320, reducing the gap at the snap connection, thereby solving the problem of increased gap at the snap connection caused by multiple disassembly of the sealing ring 300 without affecting quick disassembly.

[0061] Inspired by the above ideal embodiments of the present invention, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A filter assembly for a vacuum cleaner, characterized in that, Comprising: A cylindrical bracket (100); A filter cartridge (200) sleeved on the side wall of the cylindrical bracket (100); A sealing ring (300) provided at the bottom of the cylindrical bracket (100); A filter disc (400) snap-fitted on the sealing ring (300) and connected to the cylindrical bracket (100) through the sealing ring (300); Wherein, a wedge-shaped insertion block (310) is provided at the top of the sealing ring (300); An insertion hole (110) is provided at the bottom of the cylindrical bracket (100) corresponding to the wedge-shaped insertion block (310); A groove (311) is provided at the top of the wedge-shaped insertion block (310), and a holding member (320) is provided in the groove (311); The holding member (320) is adapted to pull the side walls on both sides of the wedge-shaped insertion block (310) inward to reduce the width of the wedge-shaped insertion block (310); the holding member (320) is adapted to clamp the side wall of the wedge-shaped insertion block (310) against the inner wall of the insertion hole (110) after the wedge-shaped insertion block (310) is inserted into the insertion hole (110).

2. The filter assembly for a vacuum cleaner according to claim 1, wherein The holding member (320) comprises: A plug rod (321) with one end passing through the sealing ring (300) and extending into the groove (311) of the wedge-shaped insertion block (310), and a return spring (322) sleeved on the other end; The sealing ring (300) is provided with an installation groove (330) for installing the return spring (322); One end of the return spring (322) abuts against the installation groove (330), and the other end is fixedly connected to the plug rod (321); Two support rods (323), wherein one end of the support rod (323) is hinged to the end of the plug rod (321) extending into the groove (311), and the other end of the support rod (323) is hinged to the side wall of the wedge-shaped insertion block (310) corresponding thereto.

3. The filter assembly for a vacuum cleaner according to claim 2, wherein The rotation angle of the support rod (323) is a, and the range of a is between 30° and 85°; Wherein, the rotation angle a refers to the included angle between the axis of the support rod (323) and the axis of the plug rod (321).

4. The filter assembly for a vacuum cleaner according to claim 1, wherein A circular flanging (340) is provided at the bottom surface of the sealing ring (300); The circular flanging (340) is axially inwardly opened along the sealing ring (300) and forms a slot (350) for inserting the filter disc (400) with the bottom of the sealing ring (300); One end of the plug rod (321) of the holding member (320) away from the groove (311) abuts against the circular flanging (340).

5. The filter assembly for a vacuum cleaner according to claim 4, wherein An inclined groove (410) is provided on the side wall of the filter disc (400); A sliding column (3231) extends radially outward at the mating portion of the insertion rod (321) and the inclined groove (410); The sliding column (3231) is inserted into the inclined groove (410); After the wedge-shaped insertion block (310) is inserted into the insertion hole (110), the filter disc (400) is rotated by an external force, driving the inclined groove (410) to rotate, thereby adjusting the distance between the sliding column (3231) and the bottom surface of the sealing ring (300), and further adjusting the distance between the insertion rod (321) and the bottom surface of the sealing ring (300), so that the abutting member (320) further clamps the side wall of the wedge-shaped insertion block (310) and the inner wall of the insertion hole (110), and at the same time clamps the filter disc (400) and the bottom surface of the sealing ring (300).

6. The filter assembly for a vacuum cleaner according to claim 5, wherein A chute (420) adapted to the sliding column (3231) is further provided in the vertical direction on the side wall of the filter disc (400); The chute (420) penetrates the top surface of the filter disc (400), and the chute (420) communicates with the inclined groove (410); When the filter disc (400) is snapped into the card slot of the sealing ring (300), first align the chute (420) with the sliding column (3231), and then rotate the filter disc (400) by an external force, so that the sliding column (3231) is snapped into the inclined groove (410) and slides along the inclined groove (410).

7. The filter assembly for a vacuum cleaner according to claim 4, wherein A chute (420) is provided in the vertical direction on the side wall of the filter disc (400); A sliding column (3231) extends radially outward at the mating portion of the insertion rod (321) and the chute (420); The sliding column (3231) is inserted into the chute (420), and a plurality of strip teeth (430) are provided on the side wall of the chute (420) along the sliding direction of the sliding column (3231); When the filter disc (400) is pulled out, the dust on the surfaces of the filter disc (400), the sealing ring (300), and the filter cartridge (200) is shaken off by the vibration formed by the sliding column (3231) sliding along the plurality of strip teeth (430).

8. The filter assembly for a vacuum cleaner according to claim 1, wherein A first limiting ring (120) extends axially from the edge of the top of the cylindrical bracket (100) towards the bottom of the cylindrical bracket (100); A second limiting ring (130) extends axially from the edge of the bottom of the cylindrical bracket (100) towards the top of the cylindrical bracket (100); The top of the filter cartridge (200) is installed between the first limiting ring (120) and the side wall of the cylindrical bracket (100); The bottom of the filter cartridge (200) is installed between the second limiting ring (130) and the side wall of the cylindrical bracket.

9. The filter assembly for a vacuum cleaner according to claim 8, wherein The insertion hole (110) is arranged close to the second limiting ring (130); Moreover, the embedding hole (110) is away from the inner side of the filter cartridge (200).

10. A method of using a filter assembly for a vacuum cleaner as described in claim 1, characterized in that, The usage method includes: During assembly: Sheathe the filter cartridge (200) on the cylindrical bracket (100); Snap the filter disc (400) onto the sealing ring (300); Use the abutting member (320) to pull the walls on both sides of the wedge-shaped embedding block (310) inward, and then insert the wedge-shaped embedding block (310) into the embedding hole (110); Use the abutting member (320) to clamp the side wall of the wedge-shaped embedding block (310) against the inner wall of the embedding hole (110); During disassembly: Remove the filter disc (400) from the sealing ring (300); Use the abutting member (320) to pull the walls on both sides of the wedge-shaped embedding block (310) inward, and then pull out the wedge-shaped embedding block (310) from the embedding hole (110); Remove the filter cartridge (200) from the cylindrical bracket (100).

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