Filtering device for air purifier

Abstract

The utility model relates to a filtering device for an air purifier, which comprises a rectangular filter element main body with a first frame edge and a second frame edge opposite to each other, and mounting mechanisms respectively arranged on the first frame edge and the second frame edge, the mounting mechanism comprises a pair of connecting rods which are arranged in the length direction of the frame edge and slide in the width direction of the frame edge, elastic pieces arranged between the pair of connecting rods and a plurality of pulley assemblies arranged on the pair of connecting rods respectively, and the elastic pieces are located at the two ends of the connecting rods respectively; each pulley assembly comprises a supporting piece with one end fixed to the connecting rod and the other end extending outwards, and a rolling wheel rotationally connected to the other end of the supporting piece around a first rotating shaft arranged in the length direction and the sliding direction perpendicular to the connecting rod. The air purifier filter element is simple in structure and convenient and fast to mount, the convenience of mounting and dismounting the filter element is improved, the problems that a traditional clamping component is prone to deviation and blockage in mounting are solved, the air purifier filter element can be suitable for air purifiers of different models and sizes, and universality and practicability are improved.

Description

Technical Field

[0001] This utility model relates to a filter device for air purifiers, and is applicable to the field of filter element processing technology. Background Technology

[0002] The filter element in an air purifier is a crucial component, not only removing dust and debris but also adsorbing harmful substances like formaldehyde to purify indoor air. Since the filtered dust and debris remain on the filter element, it typically requires cleaning or replacement after a period of use. Most existing air purifier filters consist of a rectangular frame and filter cloth fixed inside the frame. During installation, the filter element is inserted into a groove within the air purifier, and a locking mechanism on the filter frame engages with a locking mechanism in the groove. For example, the air purifier disclosed in publication number CN208765126U uses a sliding block and groove for assembly and disassembly. However, in this installation structure, the filter element and the locking mechanism inside the air purifier are directly opposite each other. Even a slight deviation in the angle or position of the filter insertion will cause the locking mechanism to fail, requiring repeated removal and re-attempts of the filter element. This cumbersome and inconvenient installation process is extremely difficult to maintain. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, this utility model proposes a filter device for air purifiers.

[0004] The present invention provides a filtration device for an air purifier, comprising a rectangular filter element body slidably embedded inside the air purifier via its opposing first and second frame edges. The filtration device also includes mounting mechanisms respectively disposed on the first and second frame edges. Each mounting mechanism includes a pair of connecting rods arranged along the length direction of the first and / or second frame edges and slidably connected to the first and / or second frame edges along their width direction; at least two elastic members disposed between the pair of connecting rods; and a plurality of pulley assemblies respectively disposed on the pair of connecting rods. At least two elastic members are located at the two ends of the connecting rods. Each pulley assembly includes a support member with one end fixedly connected to the connecting rod and the other end extending outwards; and a roller rotatably connected to the other end of the support member about a first rotating shaft perpendicular to the length and sliding direction of the connecting rod. The mounting mechanism has at least two working states. In the first working state, the pair of connecting rods approach each other, and the elastic members are compressed. In the second working state, the pair of connecting rods move away from each other, the elastic members are released, and the outer side of the roller protrudes beyond the filter surface of the filter element body. When installing the filter element, the pair of connecting rods are manually brought closer together, and one end of each rod is inserted into the slot of the air filter. Then, the pressure on the connecting rods is released, and the rods move away from each other under the action of the elastic element. The rollers on the connecting rods then press against the side walls of the slots inside the air filter. Force is then applied to allow the filter element to slide into the air purifier slot under the action of the rollers, completing the installation. This avoids the disassembly and assembly problems associated with traditional snap-fit ​​components. The connecting rods and elastic element improve the ease of filter element installation, and the spacing between the connecting rods can be flexibly adjusted to accommodate different sized air purifier slots, improving practicality. Furthermore, the pulley assembly eliminates the need to overcome friction between the filter and the air purifier slot when inserting or removing the filter element, making installation and removal even easier.

[0005] Furthermore, the mounting mechanism also includes at least two first sliding grooves formed on the surfaces of the first frame edge and / or the second frame edge along the sliding direction of the connecting rod. Each connecting rod is provided with a first slider corresponding to the first sliding groove. The connecting rod is slidably connected to the first sliding groove through the first slider. The at least two first sliding grooves are respectively located at both ends of the first frame edge and / or the second frame edge. The sliding connection of the connecting rod relative to the first frame edge and / or the second frame edge is achieved through the first sliding grooves and the first sliders. The fact that the first sliding grooves are respectively located at both ends of the frame edge can ensure the sliding stability of the connecting rod.

[0006] Furthermore, several pulley assemblies are evenly distributed on a pair of connecting rods, and the position of the pulley assembly on each connecting rod corresponds to the position of the pulley assembly on the other connecting rod. This evenly distributed pulley assembly ensures stability when inserting or removing the filter element body, preventing misalignment.

[0007] Furthermore, the pulley assembly also includes a second slider disposed below the first pivot and a second groove formed on the surface of the first frame edge and / or the second frame edge along the sliding direction of the connecting rod, with the second slider slidably embedded in the second groove. Each pulley assembly is provided with a second slider and a second groove, further improving the stability of the connecting rod during sliding.

[0008] Furthermore, the pulley assembly also includes a ratchet assembly for preventing the filter body from sliding out of the air purifier. The ratchet assembly includes at least one pawl rotatably connected to the side wall of the first rotating shaft at one end, about a second rotating shaft parallel to the first rotating shaft; several ratchet teeth formed on the inner wall of the roller; and a torsion spring sleeved on the second rotating shaft and used to apply force to the pawl, causing the other end of the pawl to move away from the first rotating shaft. The roller tilts in the direction of rotation when the pawl slides into the air purifier from one end to the other towards the filter body. The ratchet assembly allows the roller to rotate normally when the filter body is inserted into the purifier slot, and when the filter body is pulled out, the roller is locked by the ratchet, preventing the filter body from slipping out and improving the installation stability of the filter. Furthermore, when it is necessary to remove the filter, force can be applied to a pair of connecting rods to bring them closer together, thereby disengaging the roller from the inner wall of the purifier slot and allowing the filter to be removed.

[0009] Furthermore, the roller surface is provided with anti-slip pads, which can increase the friction between the roller and the purifier slot, ensuring that the roller will not slip between itself and the purifier slot after being locked by the ratchet assembly, further preventing the filter from slipping out.

[0010] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0011] The air purifier filter device of this utility model has a simple structure and is easy to install. The connecting rod, elastic element and pulley assembly improve the convenience of filter installation and disassembly, avoid the problems of easy misalignment and jamming caused by traditional clamping components, and can be used for air purifiers of different models and sizes, thus improving versatility and practicality. Attached Figure Description

[0012] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar mechanisms or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0013] Figure 1 This is a structural schematic diagram of one embodiment of the present utility model. Figure 1 ;

[0014] Figure 2 yes Figure 1 Structural diagram of the embodiment shown Figure 2 ;

[0015] Figure 3 yes Figure 1 Schematic diagram of the installation mechanism in the illustrated embodiment Figure 1 ;

[0016] Figure 4 yes Figure 1 Schematic diagram of the installation mechanism in the illustrated embodiment Figure 2 ;

[0017] Figure 5 yes Figure 4 Enlarged view of a partial structure of the embodiment shown;

[0018] Figure 6 yes Figure 1 A schematic diagram of the ratchet assembly in the embodiment shown;

[0019] The annotations in the attached figures are explained as follows:

[0020] 1. Filter element body; 11. First frame edge; 12. Second frame edge; 2. Mounting mechanism; 21. Connecting rod; 22. Elastic element; 23. Pulley assembly; 231. Support element; 232. Roller; 233. First rotating shaft; 234. Second slider; 235. Second slide groove; 24. First slide groove; 25. First slider; 26. Ratchet assembly; 261. Pawl; 262. Second rotating shaft; 263. Ratchet tooth. Detailed Implementation

[0021] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] In the description of this utility model, it should be noted that the terms "inner" and "outer" regarding direction are defined according to the structural direction of the filter device. Specifically, in the direction perpendicular to the filter surface of the filter element body, the side closer to the filter surface is "inner," and vice versa. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0023] Reference Appendix Figure 1-6The air purifier filter device in this embodiment includes a rectangular filter element body 1 that is slidably embedded inside the air purifier via its opposing first frame side 11 and second frame side 12. The filter device also includes mounting mechanisms 2 respectively disposed on the first frame side 11 and the second frame side 12. Each mounting mechanism 2 includes a pair of connecting rods 21 whose length direction is along the length direction of the first frame side 11 or / and the second frame side 12 and which are slidably connected to the first frame side 11 or / and the second frame side 12 in the width direction of the first frame side 11 or / and the second frame side 12; at least two elastic members 22 disposed between the pair of connecting rods 21; and a plurality of pulleys respectively disposed on the pair of connecting rods 21. Component 23, at least two elastic elements 22 are located at both ends of the connecting rod 21. Each pulley assembly 23 includes a support member 231 with one end fixedly connected to the connecting rod 21 and the other end extending outward, and a roller 232 rotatably connected to the other end of the support member 231 about a first rotating shaft 233 arranged perpendicular to the length direction and sliding direction of the connecting rod 21. The mounting mechanism 2 has at least two working states. When it is in the first working state, a pair of connecting rods 21 are close to each other and the elastic elements 22 are compressed. When the mounting mechanism 2 is in the second working state, a pair of connecting rods 21 are far apart and the elastic elements 22 are released. The outer side of the roller 232 protrudes from the filter surface of the filter element body 1. When installing the filter element body 1, the pair of connecting rods 21 are manually brought closer together, and one end of each connecting rod 21 is inserted into the slot of the air filter. Then, the pressure applied to the connecting rods 21 is released, and the pair of connecting rods 21 move away from each other under the action of the elastic element. The rollers 232 on the connecting rods 21 then press against the side walls of the slots inside the air filter. Force is then applied to make the filter element body 1 slide into the air purifier slot under the action of the rollers 232, completing the installation. This avoids the disassembly and assembly problems associated with traditional clamping components. By setting the connecting rods 21 and the elastic element 22, the installation convenience of the filter element body 1 is improved, and the spacing between the pair of connecting rods 21 can be flexibly changed to accommodate air purifier slots of different sizes, improving practicality. Furthermore, the pulley assembly 23 eliminates the need to overcome the friction between the filter element and the air purifier slot when inserting or removing the filter element body 1, making installation and disassembly easier.

[0024] In a more preferred embodiment, the mounting mechanism 2 further includes at least two first sliding grooves 24 formed on the surface of the first frame edge 11 and / or the second frame edge 12 along the sliding direction of the connecting rod 21. Each connecting rod 21 is provided with a first slider 25 corresponding to the first sliding groove 24. The connecting rod 21 is slidably connected to the first sliding groove 24 through the first slider 25. At least two first sliding grooves 24 are respectively located at both ends of the first frame edge 11 and / or the second frame edge 12. The sliding connection of the connecting rod 21 relative to the first frame edge 11 and / or the second frame edge 12 is achieved through the first sliding grooves 24 and the first sliders 25. The first sliding grooves 24 being respectively located at both ends of the frame edge can ensure the sliding stability of the connecting rod 21.

[0025] In a more preferred embodiment, a plurality of pulley assemblies 23 are evenly distributed on a pair of connecting rods 21, and the position of the pulley assembly 23 on each connecting rod 21 corresponds to the position of the pulley assembly 23 on the other connecting rod 21. The evenly distributed pulley assemblies 23 ensure stability when inserting or removing the filter element body 1 and prevent the filter element body 1 from shifting.

[0026] In a more preferred embodiment, the pulley assembly 23 further includes a second slider 234 disposed below the first pivot 233 and a second groove 235 formed on the surface of the first frame edge 11 and / or the second frame edge 12 along the sliding direction of the connecting rod 21, wherein the second slider 234 is slidably embedded in the second groove 235. Each pulley assembly 23 is provided with a second slider 234 and a second groove 235, further improving the stability of the connecting rod 21 during sliding.

[0027] In a more preferred embodiment, the pulley assembly 23 further includes a ratchet assembly 26 for preventing the filter body 1 from sliding out of the air purifier. The ratchet assembly 26 includes at least one pawl 261 rotatably connected to the side wall of the first rotating shaft 233 at one end about a second rotating shaft 262 parallel to the first rotating shaft 233, a plurality of ratchet teeth 263 formed on the inner wall of the roller 232, and a torsion spring (not shown in the figure) sleeved on the second rotating shaft 262 for applying force to the pawl 261 to move the other end of the pawl 261 away from the first rotating shaft 233. When the pawl 261 slides into the air purifier from one end to the other, the rotation direction of the roller 232 is tilted. The ratchet assembly 26 allows the roller 232 to rotate normally when the filter body 1 is inserted into the purifier slot, and when the filter body 1 is pulled out, the roller 232 is locked by the ratchet, which can prevent the filter body 1 from slipping out and improve the installation stability of the filter. Furthermore, when it is necessary to remove the filter element, force can be applied to a pair of connecting rods 21 to bring them closer together, thereby causing the roller 232 to disengage from the inner wall of the purifier slot, thus removing the filter element.

[0028] In a more preferred embodiment, the surface of the roller 232 is provided with an anti-slip pad, which can increase the friction between the roller 232 and the purifier slot, ensuring that the roller 232 will not slip between itself and the purifier slot after being locked by the ratchet assembly 26, and further preventing the filter element from slipping off.

[0029] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0030] The air purifier filter device of this utility model has a simple structure and is easy to install. The connecting rod, elastic element and pulley assembly improve the convenience of filter installation and disassembly, avoid the problems of easy misalignment and jamming caused by traditional clamping components, and can be used for air purifiers of different models and sizes, thus improving versatility and practicality.

[0031] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the protection scope of this utility model.

Claims

1. A filter device for an air purifier, comprising a rectangular filter body (1) slidably embedded inside the air purifier via its opposing first frame side (11) and second frame side (12), characterized in that: The filter device further includes mounting mechanisms (2) respectively disposed on the first frame edge (11) and the second frame edge (12). Each mounting mechanism (2) includes a pair of connecting rods (21) disposed along the length direction of the first frame edge (11) or / and the second frame edge (12) and slidably connected to the first frame edge (11) or / and the second frame edge (12) along the width direction of the first frame edge (11) or / and the second frame edge (12), at least two elastic elements (22) disposed between the pair of connecting rods (21), and a plurality of pulley assemblies (23) respectively disposed on the pair of connecting rods (21). At least two elastic elements (22) are respectively located at the two ends of the connecting rods (21). Each pulley assembly (23) includes a support member (231) with one end fixedly connected to the connecting rod (21) and the other end extending outward, and a roller (232) rotatably connected to the other end of the support member (231) about a first rotating shaft (233) arranged perpendicular to the length direction and sliding direction of the connecting rod (21). The mounting mechanism (2) has at least two working states. When it is in the first working state, the pair of connecting rods (21) are close to each other and the elastic member (22) is compressed. When the mounting mechanism (2) is in the second working state, the pair of connecting rods (21) are far apart from each other, the elastic member (22) is released, and the outer side of the roller (232) protrudes from the filter surface of the filter element body (1).

2. The air purifier filter device according to claim 1, characterized in that: The mounting mechanism (2) further includes at least two first grooves (24) opened on the surface of the first frame edge (11) or / and the second frame edge (12) along the sliding direction of the connecting rod (21). Each connecting rod (21) is provided with a first slider (25) corresponding to the first groove (24). The connecting rod (21) is slidably connected to the first groove (24) through the first slider (25). At least two first grooves (24) are located at the two ends of the first frame edge (11) or / and the second frame edge (12), respectively.

3. The air purifier filter device according to claim 1, characterized in that: Several pulley assemblies (23) are evenly distributed on a pair of connecting rods (21), and the position of each pulley assembly (23) on each connecting rod (21) corresponds to the position of the pulley assembly (23) on the other connecting rod (21).

4. The air purifier filter device according to claim 1, characterized in that: The pulley assembly (23) further includes a second slider (234) disposed below the first rotating shaft (233) and a second groove (235) opened on the surface of the first frame edge (11) or / and the second frame edge (12) along the sliding direction of the connecting rod (21), wherein the second slider (234) is slidably embedded in the second groove (235).

5. The air purifier filter device according to claim 1, characterized in that: The pulley assembly (23) further includes a ratchet assembly (26) for limiting the filter body (1) from sliding out of the air purifier. The ratchet assembly (26) includes at least one pawl (261) rotatably connected to the side wall of the first rotating shaft (233) about a second rotating shaft (262) parallel to the first rotating shaft (233), a plurality of ratchet teeth (263) formed on the inner wall of the roller (232), and a torsion spring sleeved on the second rotating shaft (262) for applying force to the pawl (261) so that the other end of the pawl (261) moves away from the first rotating shaft (233). When the pawl (261) slides into the air purifier from one end to the other end, the rotation direction of the roller (232) is tilted.

6. The air purifier filter device according to claim 1, characterized in that: The surface of the roller (232) is provided with an anti-slip rubber pad.

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