Filter holder and filter device

Abstract

The application provides a filter support and a filter device, the filter support comprises at least two folding support rings and support strips connecting the folding support rings, the folding support ring comprises a plurality of support ring segments, two adjacent support ring segments are connected by a support strip, the two adjacent support ring segments can rotate relatively to deform the folding support ring, and the support strip can be deformed when the two adjacent support ring segments rotate relatively, the folding support ring further comprises a retaining structure arranged between the two adjacent support ring segments and capable of retaining the shape of the folding support ring in the use state. The filter support and the filter device provided by the application can prevent the two adjacent support ring segments from falling off and collapsing at the rotating connection position when the folding support ring is deformed by the relative rotation of the two support ring segments, and ensure the structural stability of the folding support ring.

Description

Technical Field

[0001] This invention belongs to the field of air purification technology, and more specifically, relates to a filter holder and a filter device. Background Technology

[0002] To improve indoor air quality and reduce the burden on people's respiratory systems, air purifiers are widely used in indoor offices, homes, and other settings. Currently, many air purifiers on the market use hollow cylindrical filters, which prevents the reduction of packaging volume, resulting in exceptionally high packaging and transportation costs and wasting social transportation resources. To reduce packaging and transportation costs, some manufacturers have produced folded filters; however, these have complex structures, high manufacturing costs, and low cost-effectiveness. Furthermore, the folded filter structure is unstable, easily detaching at the fold joints and unable to revert to its hollow cylindrical shape. Summary of the Invention

[0003] The purpose of this invention is to provide a filter support and a filter device to solve the technical problems of complex and unstable folded filter structures in the prior art.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a filter bracket is provided, comprising at least two folded support rings and a support bar connecting each of the folded support rings. The folded support ring comprises multiple support ring segments, and two adjacent support ring segments are connected by the support bar. The two adjacent support ring segments can rotate relative to each other to deform the folded support ring, and the support bar can deform when the two adjacent support ring segments rotate relative to each other. The folded support ring also includes a retaining structure, which is disposed between two adjacent support ring segments and can keep the folded support ring in its shape when in use.

[0005] Optionally, the support bar includes two parallel and interconnected strip units, with the same end of each strip unit connected to two adjacent support ring segments, allowing the two strip units to rotate relative to each other.

[0006] Optionally, the support bar further includes a first deformable portion that connects the two strip units and is foldable and deformable; or, the support bar further includes a hinge structure that allows the two strip units to be rotatably connected.

[0007] Optionally, the first deformable portion is strip-shaped, and its two sides along its length are respectively connected to two strip-shaped units; or, the first deformable portion includes a plurality of spaced-apart deformable units, and the two sides of each deformable unit are respectively connected to two strip-shaped units.

[0008] Optionally, at least one end of the support bar connected to the support ring segment is deformable.

[0009] Optionally, the support bar includes a second deformable portion and a rigid portion. One end of the second deformable portion is connected to two adjacent support ring segments, and the other end of the second deformable portion is connected to the rigid portion. The second deformable portion can deform when the two adjacent support ring segments rotate relative to each other.

[0010] Optionally, the second deformable portion includes two first connecting ribs and a thin-walled portion connecting the two first connecting ribs, wherein the two first connecting ribs are respectively connected to two adjacent support ring segments, and the thickness of the thin-walled portion is less than the thickness of the first connecting ribs.

[0011] Optionally, the support bar includes at least two support segments connected sequentially along the length of the support bar, and two adjacent support segments can be detachably connected or fixedly connected.

[0012] Optionally, in two adjacent support segments, one end of one support segment has a buckle, and the other end of the support segment has a slot that engages with the buckle.

[0013] Optionally, the retaining structure includes an elastic portion, wherein in two adjacent support ring segments, one end of the elastic portion is connected to one of the support ring segments, and the other end of the elastic portion is connected to the other support ring segment.

[0014] Optionally, the retaining structure further includes a fixed shaft, the elastic part is a torsion spring, the torsion spring is sleeved on the fixed shaft, and the support ring segment is provided with a stop structure for abutting against the elastic part.

[0015] Optionally, two adjacent support ring segments have two mating surfaces that are in close contact with each other, one of the mating surfaces protruding towards the other mating surface to form the fixing shaft, and the other mating surface having a clearance notch for avoiding the fixing shaft.

[0016] The present invention also provides a filtration device, including the above-described filter support, and further including a filter structure fixed on the filter support.

[0017] The beneficial effects of the filter bracket and filter device provided by this invention are as follows: Compared with the prior art, the filter bracket of this invention includes a folded support ring and a support bar. Multiple folded support rings are connected by the support bar. The folded support ring includes multiple support ring segments and a retaining structure. One end of the support bar is connected to two adjacent support ring segments. When the two support ring segments rotate relative to each other, causing the folded support ring to deform, the support bar will also fold or deform accordingly. This end of the support bar is always connected to the two adjacent support ring segments, preventing the two adjacent support ring segments from falling off at their rotational connection point and ensuring the structural stability of the folded support ring. The retaining structure can keep the folded support ring in its shape when in use, thereby allowing the filter bracket to return to its shape before deformation and thus be used normally. Specifically, when the filter bracket needs to be packaged and transported, the folded support ring can be folded and deformed to reduce the volume of the filter bracket, thereby reducing packaging and transportation costs. When the user uses the filter bracket, the retaining structure can be used to restore the folded support ring to its shape when in use. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A three-dimensional structural diagram of the filter holder provided in the embodiment of the present invention in its use state;

[0020] Figure 2 This is a three-dimensional structural diagram of the filter holder provided in the embodiment of the present invention in a folded state;

[0021] Figure 3 Top views of the filter holder provided in the embodiment of the present invention in the use state and folded state;

[0022] Figure 4 for Figure 3 Enlarged structural diagram of B in the middle;

[0023] Figure 5 for Figure 1 Enlarged structural diagram of A in the middle;

[0024] Figure 6 This is a partial structural diagram of the first type of filter holder provided in the embodiment of the present invention in a folded state;

[0025] Figure 7 This is a connection structure diagram of two support sections of the first type of filter bracket provided in an embodiment of the present invention;

[0026] Figure 8 This is a partial three-dimensional structural diagram of the second type of filter holder provided in an embodiment of the present invention;

[0027] Figure 9 for Figure 8 Enlarged structural diagram of C;

[0028] Figure 10 This is a connection structure diagram of the two support sections of the second type of filter bracket provided in an embodiment of the present invention;

[0029] Figure 11 A three-dimensional structural diagram of the filtration device provided in an embodiment of the present invention;

[0030] Figure 12 This is a three-dimensional structural diagram of the filter structure provided in an embodiment of the present invention.

[0031] The following are the labeling elements in the figure:

[0032] 100-Filter bracket; 1-Folded support ring; 11-Support ring segment; 112-Avoidance notch; 113-Stop structure; 12-Retaining structure; 121-Elastic part; 122-Fixed shaft; 2-Support bar; 21-Support segment; 211-Strip unit; 212-First deformable part; 221-Snap-on unit; 222-Gap space; 223-Slot unit; 224-Avoidance opening; 23-Support segment; 231-Second deformable part; 2311-First connecting rib; 2312-Thin-walled part; 232-Rigid part; 2321-Second connecting rib; 2322-Thick-walled part; 233-Reinforcing structure; 234-Insert part; 2341-Snap-on part; 235-Limiting part; 2351-Insertion hole; 2352-Card hole;

[0033] 200 - Filter structure; 201 - Outer membrane; 202 - Inner membrane; 203 - Filter layer. Detailed Implementation

[0034] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0035] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0036] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0038] The filter support 100 provided in this embodiment of the invention will now be described. The filter support 100 is used to support the filter structure 200, keeping the filter structure 200 in a stable state for filtering air, liquids, etc. When the filter support 100 is folded, the filter structure 200 will also fold accordingly, allowing the filter device to be folded and deformed as a whole, reducing its size and facilitating packaging and transportation.

[0039] Please refer to the following: Figures 1 to 4 The filter support 100 includes folded support rings 1 and support bars 2. There are at least two folded support rings 1, which can be spaced apart. The folded support rings 1 are connected by the support bars 2, and can be arranged sequentially along the length of the support bars 2.

[0040] The folding support ring 1 includes multiple support ring segments 11 and a retaining structure 12. The multiple support ring segments 11 are connected end to end in sequence, so that the folding support ring 1 can be ring-shaped. The retaining structure 12 is disposed between two adjacent support ring segments 11. The retaining structure 12 is used to keep the folding support ring 1 in its shape when in use. When in use, that is, when the filter bracket 100 is in use, the folding support ring 1 can be ring-shaped, and the filter bracket 100 is correspondingly cylindrical. Two adjacent support ring segments 11 can rotate relative to each other, thereby folding and deforming the folding support ring 1, making the volume of the folding support ring 1 smaller after folding, which is more convenient for packaging and transportation.

[0041] Two adjacent support ring segments 11 are connected by support strips 2. When the folding support ring 1 is folded, the connection angle between the two adjacent support ring segments 11 changes, and the support strips 2 connected to these two support ring segments 11 also fold or deform accordingly. This allows the two adjacent support ring segments 11 to be connected by support strips 2, preventing them from falling off each other, and to rotate and fold normally, ensuring the structural stability of the folding support ring 1 during folding.

[0042] The filter holder 100 in the above embodiment includes a folded support ring 1 and a support bar 2. Multiple folded support rings 1 are connected by the support bar 2. Each folded support ring 1 includes multiple support ring segments 11 and a retaining structure 12. One end of the support bar 2 is connected to two adjacent support ring segments 11. When the two support ring segments 11 rotate relative to each other, causing the folded support ring 1 to deform, the support bar 2 will also fold or deform accordingly. This end of the support bar 2 is always connected to the two adjacent support ring segments 11, preventing them from falling apart at their rotational connection point and ensuring the structural stability of the folded support ring 1, thereby ensuring the stability of the filter holder 100. The retaining structure 12 keeps the folded support ring 1 in its shape as it is in use, allowing the filter holder 100 to return to its shape before deformation and thus be used normally. Specifically, when packaging and transporting the filter holder 100, the folded support ring 1 can be folded and deformed to reduce the volume of the filter holder 100, thereby reducing packaging and transportation costs. When used by the user, the retaining structure 12 can be used to restore the folded support ring 1 to its shape as it is in use.

[0043] In one embodiment of the present invention, please refer to Figure 1 The filter support 100 can be cylindrical in use, with multiple folded support rings 1 parallel to each other and arranged sequentially along the length of the support strip 2. All folded support rings 1 can be connected simultaneously by the same support strip 2. There can also be multiple support strips 2, circumferentially distributed on the inner or outer ring walls of the folded support rings 1. Each pair of adjacent support ring segments 11 is connected by a support strip 2, making the connection between these two adjacent support ring segments 11 more stable. Alternatively, some pairs of adjacent support ring segments 11 can be connected by support strips 2, while others can be connected by hinge structures or similar means.

[0044] Optionally, there are multiple support bars 2. Some support bars 2 are disposed on the inner wall of the folding support ring 1, so that two adjacent support ring segments 11 can be folded into the folding support ring 1. Some support bars 2 are disposed on the outer wall of the folding support ring 1, so that two adjacent support ring segments 11 can be folded outward, thereby making the folding support ring 1 fold into a flat shape and minimizing the space occupied by the filter bracket 100.

[0045] Within the same folded support ring 1, the number of support ring segments 11 can be multiple, such as three, four, five, six, seven, eight, etc. Please refer to [link / reference]. Figure 3 , Figure 3 The left side shows the shape of the folding support ring 1 in use. Figure 3 The right side shows the shape of the folding support ring 1 after folding. There are four support ring segments 11. After folding, the folding support ring 1 forms a figure-eight shape, with one half of the figure-eight shape consisting of two support ring segments 11. Alternatively, there are six support ring segments 11. After folding, the folding support ring 1 also forms a figure-eight shape, with one half of the figure-eight shape consisting of three support ring segments 11.

[0046] In one embodiment of the present invention, please refer to Figures 1 to 3 The folding support ring 1 has two segments. In one folding support ring 1, two adjacent support ring segments 11 are connected by one end of a support bar 2. In the other folding support ring 1, two adjacent support ring segments 11 are connected by the other end of a support bar 2. The folding support ring 1 includes four support ring segments 11, and there are also four support bars 2. Two support bars 2 are located on the inner wall of the folding support ring 1, and the other two support bars 2 are located on the outer wall of the folding support ring 1.

[0047] In one embodiment of the present invention, please refer to Figure 1 and Figure 2 The support bar 2 includes at least two support segments 21, and multiple support segments 21 are connected sequentially along the length of the support bar 2. Adjacent support segments 21 are interconnected. Specifically, adjacent support segments 21 can be detachably connected, such as by snap-fit ​​or magnetic connection, or fixedly connected, such as by welding, threaded connection, or adhesive bonding. When the support bar 2 includes multiple support segments 21, each support segment 21 can be connected and fixed to its corresponding support ring segment 11, allowing each folded support ring 1 to be separately formed. After assembling the filter structure 200, the multiple support segments 21 are then interconnected. This facilitates the installation of the filter structure 200.

[0048] Optionally, two adjacent support segments 21 are snap-fitted together, with one support segment 21 having a snap-fit ​​and the other support segment 21 having a slot, so that the two support segments 21 are snapped together. Except for the slot or snap-fit ​​structure that connects to the other support segment 21, the structure of each support segment 21 can be the same.

[0049] In one embodiment of the present invention, please refer to Figure 1 and Figure 2The number of folded support rings 1 is two, and each support bar 2 includes two support segments 21. The filter bracket 100 includes a first bracket and a second bracket. The first bracket includes a folded support ring 1 and multiple support segments 21, and the second bracket includes another folded support ring 1 and multiple support segments 21. The support segments 21 in the first bracket and the support segments 21 in the second bracket are connected in a one-to-one correspondence.

[0050] Optionally, the first support is integrally molded, such as by injection molding. The second support is integrally molded, such as by injection molding.

[0051] In one embodiment of the present invention, please refer to Figure 6 The support bar 2 includes two parallel strip units 211, which are connected to each other. The length direction of the two strip units 211 is parallel to the length direction of the support bar 2, so that the two longer sides of the two strip units 211 are connected to each other. In the same folding support ring 1, the same end of the two strip units 211 is connected to the two support ring segments 11. When the two adjacent support ring segments 11 rotate relative to each other, the two strip units 211 also rotate accordingly. Since the two strip units 211 are connected to each other, the two support ring segments 11 will not detach or fall apart when they rotate relative to each other.

[0052] Specifically, within the same support bar 2, one strip unit 211 is fixedly connected to one support ring segment 11, and the other strip unit 211 is fixedly connected to another adjacent support ring segment 11. When the two adjacent folding support rings 1 rotate relative to each other, the strip unit 211 is fixedly connected to the corresponding support ring segment 11, that is, the strip unit 211 and the corresponding support ring segment 11 move synchronously, and the rotation angle of the two support ring segments 11 is the same as the rotation angle of the two strip units 211.

[0053] In one embodiment of support bar 2, please refer to Figure 6 The support bar 2 also includes a first deformable part 212, which connects two strip units 211. The first deformable part 212 can be folded and deformed so that the two strip units 211 can rotate freely relative to each other.

[0054] Optionally, the first deformable portion 212 may be elongated, with its two longer sides connected to two strip units 211 respectively. In the direction perpendicular to the length of the support strip 2, one strip unit 211, the first deformable portion 212, and the other strip unit 211 are connected in sequence.

[0055] Optionally, the first deformable portion 212 includes multiple spaced-apart deformable units, that is, the first deformable portion 212 is distributed sequentially at intervals along the length direction of the support bar 2, and each deformable unit is connected to two strip units 211 on both sides. It can also be understood that the two strip units 211 are connected in a point-discontinuous manner through the first deformable portion 212. This arrangement of the first deformable portion 212 can reduce the rotational resistance between the two strip units 211, making it easier to fold and deform under the action of external force.

[0056] Optionally, the first deformable portion 212 may be made of a soft material, such as rubber or silicone, so that the first deformable portion 212 can deform under external force. Specifically, when the two strip units 211 rotate relative to each other, the first deformable portion 212 also undergoes folding deformation.

[0057] Optionally, the first deformable portion 212 is a thin-walled structure, and the wall thickness of the first deformable portion 212 is less than the wall thickness of the strip unit 211. When two adjacent support ring segments 11 rotate and fold relative to each other, because the wall thickness of the first deformable portion 212 is thinner, the support strip 2 folds and deforms at the first deformable portion 212, allowing the two strip units 211 to move relative to each other.

[0058] In another embodiment of the support bar 2, the support bar 2 includes two parallel strip units 211, and also includes a hinge structure that rotatably connects the two strip units 211. The hinge structure rotatably connects the two strip units 211, thereby rotatably connecting two adjacent support ring segments 11. The hinge structure may include a pivot shaft, through which the two strip units 211 are rotatably connected, thereby rotatably connecting the two strip units 211. The specific structure of the hinge structure is not limited here.

[0059] In one embodiment of the present invention, please refer to Figure 6 and Figure 7 The support bar 2 includes two parallel strip units 211 connected to each other, with their length directions parallel to the length direction of the support bar 2, such that the two longer sides of the two strip units 211 are connected to each other. The support bar 2 includes at least two support segments 21, which are sequentially connected along the length direction of the support bar 2. Each support segment 21 includes two parallel strip units 211. Adjacent support segments 21 are interlocked. One support segment 21 has a buckle, and the other support segment 21 has a slot; the buckle and slot cooperate to interlock the two support bars 2.

[0060] Optionally, please refer to Figure 7 , Figure 7 The left side of the middle section shows a three-dimensional structural diagram of the two support segments 21 when they are interlocked and fixed together. Figure 7The right side of the image shows a three-dimensional view of the two support segments 21 separated from each other. In one support segment 21, each end of the two strip units 211 has a slot unit 223, and the first deformable part 212 has a clearance opening 224 that allows the two slot units 223 to communicate. In the other support segment 21, each end of the two strip units 211 has a latching unit 221, which is used to engage with the corresponding slot unit 223, thereby engaging the two support strips 2 together. The two latching units 221 are spaced apart to form a gap space 222, allowing the two latching units 221 to deform toward the gap space 222, thus making it easier for the latching units 221 to enter the corresponding slot unit 223.

[0061] In one embodiment of the present invention, please refer to Figure 8 and Figure 9 At least one end of the support bar 2 that is connected to the support ring segment 11 is deformable, so that the support bar 2 does not affect the relative rotation of the two connected support ring segments 11, that is, it does not affect the folding deformation of the folding support ring 1, and can connect the two adjacent support ring segments 11.

[0062] Optionally, the support bar 2 includes a second deformable portion 231 and a rigid portion 232. One end of the second deformable portion 231 is connected to two adjacent support ring segments 11, and the other end of the second deformable portion 231 is connected to the rigid portion 232. There can be one second deformable portion 231, with one end of the support bar 2 serving as the second deformable portion 231, connecting two adjacent support ring segments 11, and capable of deforming when the support ring segments 11 rotate. Alternatively, there can be two second deformable portions 231, located at opposite ends of the rigid portion 232, and connected to two different folded support rings 1. When both folded support rings 1 are folded and deformed, the two second deformable portions 231 also deform accordingly. Both the second deformable portion 231 and the rigid portion 232 can be strip-shaped, with the length direction of the second deformable portion 231 and the length direction of the rigid portion 232 being the same as the length direction of the support bar 2.

[0063] The second deformable portion 231 deforms when two adjacent support ring segments 11 rotate relative to each other without affecting their relative rotation. The rigid portion 232 is rigid and does not deform when two adjacent support ring segments 11 rotate relative to each other. More specifically, one end of the second deformable portion 231 is connected to the two adjacent support ring segments 11, and this end of the second deformable portion 231 moves synchronously with the support ring segments 11. When the two support ring segments 11 rotate relative to each other, this end of the second deformable portion 231 deforms. The other end of the second deformable portion 231 is connected to the rigid portion 232, and this end of the second deformable portion 231 does not deform. Therefore, the degree of torsional deformation of the second deformable portion 231 gradually decreases from the end near the support ring segment 11 to the end near the rigid portion 232.

[0064] Optionally, the second deformable portion 231 includes a thin-walled portion 2312 and two first connecting ribs 2311. The thin-walled portion 2312 is disposed between the two first connecting ribs 2311. Both the two first connecting ribs 2311 and the thin-walled portion 2312 can be elongated. The length directions of the first connecting ribs 2311 and the thin-walled portion 2312 are parallel to the length direction of the support strip 2. The two first connecting ribs 2311 are respectively connected to two adjacent support ring segments 11. The thickness of the thin-walled portion 2312 is less than the thickness of the first connecting ribs 2311, making the second deformable portion 231 more easily deformable with the rotation of the support ring segment 11.

[0065] The first connecting rib 2311 and the thin-walled portion 2312 are connected at a certain angle, which strengthens the overall rigidity of the second deformable portion 231 and reduces the possibility of the second deformable portion 231 breaking when it is subjected to external force deformation.

[0066] Optionally, the rigid part 232 includes a thick-walled part 2322 and two second connecting ribs 2321. The thick-walled part 2322 is disposed between the two second connecting ribs 2321. Both the two second connecting ribs 2321 and the thick-walled part 2322 can be elongated strips, and the length directions of the second connecting ribs 2321 and the thick-walled part 2322 are parallel to the length direction of the support bar 2. The two second connecting ribs 2321 are respectively connected to the two first connecting ribs 2311. The thickness of the thick-walled part 2322 is greater than the thickness of the thin-walled part 2312 to prevent deformation of the rigid part 232. The cross-sections of the first connecting ribs 2311 and the second connecting ribs 2321 can be the same, so that the first connecting ribs 2311 and the second connecting ribs 2321 can be connected to form a strip rib, reducing the structural complexity of the support bar 2 and making the support bar 2 easier to process and shape.

[0067] The second connecting rib 2321 and the thick-walled part 2322 are connected at a certain angle, which strengthens the overall rigidity of the second deformable part 231. When the two adjacent support ring segments 11 are rotated and folded, the rigid part 232 maintains its shape.

[0068] In one embodiment, please refer to Figure 9 The end of the support ring segment 11 has a reinforcing structure 233, which is simultaneously disposed on the inner side of the support ring segment 11 and the adjacent support bar 2, or simultaneously disposed on the outer side of the support ring segment 11. Each end of the support ring segment 11 is provided with the aforementioned reinforcing structure 233, which is connected to the adjacent first connecting rib 2311, so that the connection between the support ring segment 11 and the first connecting rib 2311 is strengthened by the reinforcing structure 233 to prevent the connection between the support ring segment 11 and the first connecting rib 2311 from breaking.

[0069] In one embodiment of the present invention, please refer to Figures 8 to 10 The support bar 2 includes a second deformable portion 231 and a rigid portion 232. One end of the second deformable portion 231 is connected to two connected support ring segments 11, and the other end of the second deformable portion 231 is connected to the rigid portion 232. The second deformable portion 231 deforms when two adjacent support ring segments 11 rotate relative to each other without affecting the relative rotation of the two support ring segments 11. The rigid portion 232 is rigid and does not deform when two adjacent support ring segments 11 rotate relative to each other. The support bar 2 includes at least two support segments 23, and multiple support segments 23 are connected sequentially along the length direction of the support bar 2. Two adjacent support segments 23 are interlocked with each other, and each support segment 23 includes a second deformable portion 231 and a rigid portion 232.

[0070] In the two interconnected support sections 23, one support section 23 has a buckle at the end of the rigid part 232 away from the second deformable part 231, and the other support section 23 has a slot at the end of the rigid part 232 away from the second deformable part 231, and the buckle is engaged in the slot.

[0071] Optionally, please refer to Figure 10 , Figure 10 The left side of the middle section shows a three-dimensional structural diagram of the two support segments 23 being interlocked and fixed together. Figure 10The right side of the image shows a three-dimensional view of the two support segments 23 when they are separated. In one support segment 23, a limiting part 235 is provided at the end of the rigid part 232 away from the second deformable part 231. The limiting part 235 has an insertion hole 2351 inside, and a through-hole 2352 is also provided on the limiting part 235. The insertion hole 2351 and the through-hole 2352 are interconnected. In the other support segment 23, an insertion part 234 is provided at the end of the rigid part 232 away from the second deformable part 231 for insertion into the insertion hole 2351. The insertion part 234 has a latching part 2341, which extends into the latching hole 2352, thereby engaging the two support segments 23 together. The insertion hole 2351 and the insertion part 234 make the latching connection between the two support segments 23 more stable and reduce the possibility of them falling off.

[0072] In one embodiment of the present invention, please refer to Figure 1 and Figure 5 The folding support ring 1 includes multiple support ring segments 11 and a retaining structure 12. The retaining structure 12 is disposed between two adjacent support ring segments 11 to maintain the folding support ring 1 in its shape in use. Some adjacent support ring segments 11 may have a retaining structure 12 between them, while others may not. The number of retaining structures 12 is sufficient to maintain the folding support ring 1 in its shape in use. Alternatively, retaining structures 12 may be provided between all adjacent support ring segments 11.

[0073] Optionally, in a folding support ring 1, there are four support ring segments 11 and two retaining structures 12, and the two retaining structures 12 are symmetrically arranged on the folding support ring 1, so that the folding support ring 1 can be restored to the shape of the use state under the action of the two retaining structures 12.

[0074] In one embodiment, please refer to Figure 5 The retaining structure 12 includes an elastic portion 121, which is used to restore two adjacent support ring segments 11 to their connection shape when in use. One end of the elastic portion 121 is connected to one of the support ring segments 11, and the other end is connected to the other support ring segment 11. The elastic portion 121 can deform under external force, and when the external force disappears, the elastic portion 121 tends to return to its natural state under its own elastic force, thereby enabling the two adjacent support ring segments 11 to return to their original shape. The elastic portion 121 can be a tension spring, torsion spring, elastic band, spring sheet, elastic louver, elastic hinge, etc.

[0075] Specifically, during the packaging of the filter device, the filter device is compressed by the outer packaging structure, causing the filter support 100 and filter structure 200 to fold and deform, reducing the volume and thus reducing transportation costs. When the user uses the device, after unpacking, the folded support ring 1 and filter structure 200 automatically return to their original shape under the action of the elastic part 121.

[0076] Optionally, the elastic part 121 is a torsion spring, and the retaining structure 12 further includes a fixed shaft 122. The torsion spring is sleeved on the fixed shaft 122, with one end of the torsion spring abutting against one of the support ring segments 11 and the other end abutting against the other support ring segment 11. The fixed shaft 122 facilitates the installation of the torsion spring. A stop structure 113 is provided on the support ring segment 11. The stop structure 113 is used to stop the end of the torsion spring. Under the action of external force, after the folding support ring 1 is folded, the torsion spring is deformed by the resistance of the stop structure 113. The torsion spring has a reaction force on the stop structure 113. When the external force is removed, the reaction force can restore the folding support ring 1 to its shape in use. The specific shape of the stop structure 113 is not limited here. The contact surface of the stop structure 113 that abuts against the torsion spring can be arc-shaped, straight, etc.

[0077] Optionally, please refer to Figure 3 and Figure 4 In two adjacent support ring segments 11, a fixed shaft 122 is fixed to one of the support ring segments 11, and the other support ring segment 11 is provided with a clearance notch 112 to allow the fixed shaft 122 to pass. Specifically, the two support ring segments 11 have two closely fitting mating surfaces. One mating surface protrudes towards the other mating surface to form the fixed shaft 122, and the other mating surface has a clearance notch 112. When the folded support ring 1 is in use, the fixed shaft 122 is fixed within the clearance notch 112. The fixed shaft 122 is positioned at the two mating surfaces, making the centerline of the fixed shaft 122 closer to the two mating surfaces, and the force exerted by the two ends of the torsion spring on the two support ring segments 11 is more balanced.

[0078] In another embodiment, the retaining structure 12 comprises a hinge shaft and a retaining block. The hinge shaft is disposed on one of the support ring segments 11, and the retaining block is rotatably connected to the support ring segment 11 via the hinge shaft. The retaining block can be rotated to connect with the other support ring segment 11, thereby allowing the two adjacent support ring segments 11 to be restored to their shape in the use state. The retaining structure 12 can also be of other types, as long as it enables each folded support ring 1 to maintain its shape in the use state.

[0079] Please see Figure 11The present invention also provides a filtration device, which includes the filter support 100 in any of the above embodiments. The filter support 100 further includes a filter structure 200, which is fixed on the filter support 100 and can be folded together with the folding support ring 1 when the folding support ring 1 is folded.

[0080] The filtration device provided by this invention employs the aforementioned filter support 100. The filter support 100 includes a folded support ring 1 and a support bar 2. Multiple folded support rings 1 are connected by the support bar 2. Each folded support ring 1 includes multiple support ring segments 11 and a retaining structure 12. One end of the support bar 2 is connected to two adjacent support ring segments 11. When the two support ring segments 11 rotate relative to each other, causing the folded support ring 1 to deform, the support bar 2 will also fold or deform accordingly. This end of the support bar 2 is always connected to the two adjacent support ring segments 11, preventing the two adjacent support ring segments 11 from falling apart at their rotational connection point and ensuring the structural stability of the folded support ring 1. The retaining structure 12 keeps the folded support ring 1 in its shape as it is in use, allowing the filter support 100 to return to its shape before deformation and thus be used normally. Specifically, when packaging and transporting the filter support 100, the folded support ring 1 can be folded and deformed to reduce the volume of the filter support 100, thereby reducing packaging and transportation costs. When used by the user, the retaining structure 12 can be used to restore the folded support ring 1 to its shape as it is in use.

[0081] In one embodiment of the present invention, please refer to Figure 11 The filter structure 200 is cylindrical, with two folded support rings 1 located at opposite axial ends of the filter structure 200, providing effective support. The length of the support strip 2 is parallel to the axial direction of the filter structure 200. When the folded support rings 1 are folded, the filter structure 200 folds accordingly.

[0082] In one embodiment of the present invention, please refer to Figure 12 The filter structure 200 includes an outer membrane 201, an inner membrane 202, and a filter layer 203 disposed between the outer membrane 201 and the inner membrane 202. The outer membrane 201, inner membrane 202, and filter layer 203 are all foldable. The filter layer 203 may have a corrugated folded structure, capable of folding synchronously with the folding support ring 1. The shape of the filter structure 200 may be the same as that of the filter support 100; for example, both the filter structure 200 and the filter support 100 may be cylindrical.

[0083] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A filter holder, characterized by: The device includes at least two folding support rings and a support bar connecting each of the folding support rings. Each folding support ring includes multiple support ring segments. Two adjacent support ring segments are connected by the support bar. The two adjacent support ring segments can rotate relative to each other to deform the folding support ring. The support bar can also deform when the two adjacent support ring segments rotate relative to each other. The folding support ring also includes a retaining structure. The retaining structure is disposed between two adjacent support ring segments and can keep the folding support ring in its shape when in use. The support bar includes at least two support segments, and multiple support segments are connected sequentially along the length of the support bar, with adjacent support segments being detachably connected. Wherein, the end of the support bar that connects to the support ring segment is deformable; The filter support also includes a first support and a second support. The first support includes a folded support ring and a plurality of support segments, and the second support includes another folded support ring and a plurality of support segments. The support segments in the first support and the support segments in the second support are connected to each other.

2. The filter holder of claim 1, wherein: The support bar includes two parallel and interconnected strip units, with the same end of each strip unit connected to two adjacent support ring segments, allowing the two strip units to rotate relative to each other.

3. The filter holder of claim 2, wherein: The support bar further includes a first deformable portion that connects the two strip units and is foldable and deformable; or, the support bar further includes a hinge structure that allows the two strip units to be rotatably connected.

4. The filter holder as described in claim 3, characterized in that: The first deformable portion is strip-shaped, and its two sides along its length are respectively connected to two strip-shaped units; or, the first deformable portion includes a plurality of spaced-apart deformable units, and the two sides of each deformable unit are respectively connected to two strip-shaped units.

5. The filter holder as described in claim 1, characterized in that: The support bar includes a second deformable part and a rigid part. One end of the second deformable part is connected to two adjacent support ring segments, and the other end of the second deformable part is connected to the rigid part. The second deformable part can deform when the two adjacent support ring segments rotate relative to each other.

6. The filter holder as described in claim 5, characterized in that: The second deformable portion includes two first connecting ribs and a thin-walled portion connecting the two first connecting ribs. The two first connecting ribs are respectively connected to two adjacent support ring segments, and the thickness of the thin-walled portion is less than the thickness of the first connecting ribs.

7. The filter holder as described in claim 1, characterized in that: In two adjacent support sections, one end of the support section has a buckle, and the other end of the support section has a slot that engages with the buckle.

8. The filter holder according to any one of claims 1-7, characterized in that: The retaining structure includes an elastic portion, wherein in two adjacent support ring segments, one end of the elastic portion is connected to one of the support ring segments, and the other end of the elastic portion is connected to the other support ring segment.

9. The filter holder as described in claim 8, characterized in that: The retaining structure further includes a fixed shaft, the elastic part is a torsion spring, the torsion spring is sleeved on the fixed shaft, and the support ring segment is provided with a stop structure for abutting against the elastic part.

10. The filter holder as described in claim 9, characterized in that: Two adjacent support ring segments have two mating surfaces that are in close contact with each other. One of the mating surfaces protrudes towards the other mating surface to form the fixed shaft, and the other mating surface has a clearance notch for avoiding the fixed shaft.

11. A filtration device, characterized in that: The filter support includes the filter support as described in any one of claims 1-10, and further includes a filter structure fixed to the filter support.

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