Folding filter

Abstract

The utility model discloses a folding filter which comprises a filtering piece, two end covers and a supporting assembly, and the filtering piece is provided with an upper end, a lower end and a folded medium extending between the upper end and the lower end; the two end covers are respectively connected to the upper end and the lower end of the filtering piece, and the two end covers are close to each other or far away from each other, so that the filtering piece is converted between a storage state and a use state; the first end of the supporting assembly is rotatably connected to the first end cover, and the second end of the supporting assembly is detachably connected to the second end cover. When the second end of the supporting assembly is connected to the second end cover and the filtering piece is in the storage state, the filtering piece is unfolded; and when the filtering piece is in the use state, the second end of the supporting assembly is detached from the second end cover, so that the filtering piece is allowed to be folded.

Description

Technical Field

[0001] This utility model relates to the field of filtration device technology, and in particular to a pleated filter. Background Technology

[0002] Air purifiers, as a modern electrical appliance, can effectively purify the air by adsorbing, decomposing, or transforming various air pollutants, such as PM2.5, dust, and pollen. In today's world where air pollution is increasingly severe, air purifiers have received widespread attention from users. And within air purifier products, the filter element, as the filtration component, is undeniably crucial.

[0003] To extend the lifespan of air purifiers and reduce material and energy consumption, filters are typically replaceable. Users can remove old filters and install new ones to ensure continuous and efficient air purification, thus prolonging the product's lifespan. For ease of carrying and transporting, filters are usually foldable. However, this portability often results in unstable connection structures, making them prone to deformation during operation and leading to poor product stability, which in turn affects the air purifier's purification performance.

[0004] Therefore, this utility model provides a folded filter that can effectively solve the above problems. It has a simple structure, is easy to assemble, and has a stable structure. Utility Model Content

[0005] To overcome the shortcomings of the existing technology, this utility model provides a folded filter with a simple structure, convenient assembly, and stable structure.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A pleated filter, comprising:

[0008] A filter element having an upper end and a lower end, and a pleated medium extending between the upper end and the lower end;

[0009] Two end caps are respectively connected to the upper and lower ends of the filter element. The two end caps are close to or far from each other so that the filter element can be switched between a storage state and a use state.

[0010] A support assembly, wherein a first end of the support assembly is rotatably connected to a first end cap, and a second end of the support assembly is detachably connected to a second end cap;

[0011] When the second end of the support assembly is connected to the second end cap and the filter element is in a retracted state, the filter element is unfolded; when the filter element is in use, the second end of the support assembly is detached from the second end cap to allow the filter element to fold.

[0012] As an improvement to this utility model, it also includes two side covers, the two side covers being detachably connected at both ends to the two end covers, the two end covers and the two side covers forming a frame, the frame having two oppositely arranged openings, the filter element being located within the frame and at least partially exposed through the openings.

[0013] As an improvement of this utility model, the support assembly includes a first support plate and a second support plate. The first end of the first support plate and the first end of the second support plate are rotatably connected to both ends of one end cover, and the second end of the first support plate and the second end of the second support plate are both connected to the middle of the other end cover.

[0014] As an improvement of this utility model, it also includes a connecting shaft, wherein the first end of the first support plate and the first end of the second support plate are rotatably connected to both ends of the end cap via the connecting shaft.

[0015] As an improvement of this utility model, it also includes a connector. The second end of the first support plate and the second end of the second support plate are each provided with a first connecting hole, and the middle part of the end cap is provided with a second connecting hole. The connector is inserted into the first connecting hole and the second connecting hole.

[0016] As an improvement of this utility model, the end cap is provided with a third connecting hole at both ends, and the side cap is provided with a fourth connecting hole at both ends. The connector is inserted into the third connecting hole and the fourth connecting hole to connect the end cap and the side cap.

[0017] As an improvement of this utility model, the end cap includes a first closing portion and a first connecting portion, with a first crease between the first closing portion and the first connecting portion. The first closing portion is connected to the upper or lower end of the filter element, and the first connecting portion is bent along the first crease and covers at least a portion of the filter element. The side cap includes a second closing portion and a second connecting portion, with a second crease between the second closing portion and the second connecting portion. The second closing portion abuts against the left or right side of the filter element, and the second connecting portion is bent along the second crease and covers at least a portion of the filter element.

[0018] As an improvement of this utility model, the connecting shaft, the second connecting hole and the third connecting hole are all disposed in the first connecting part, and the fourth connecting hole is disposed in the second connecting part.

[0019] As an improvement of this utility model, part of the third connecting hole is provided on the connecting shaft and extends through the connecting shaft.

[0020] As an improvement of this utility model, the connector includes a pressing cap and an insert rod. The pressing cap is connected to one end of the insert rod, and the insert rod is inserted into the first connecting hole and the second connecting hole or the third connecting hole and the fourth connecting hole.

[0021] As an improvement of this utility model, an annular snap-fit ​​portion is formed by extending outward along the insertion rod, and the snap-fit ​​portion snaps into the inner sidewall of the end cap.

[0022] As an improvement of this utility model, the diameter of the snap-fit ​​portion matches the diameter of the second connecting hole and / or the third connecting hole.

[0023] As an improvement of this utility model, the snap-fit ​​portion includes multiple snap-fit ​​portions, and there is a gap between each snap-fit ​​portion.

[0024] As an improvement of this utility model, the snap-fit ​​portion on the side away from the pressing cap is an inclined slope.

[0025] As an improvement of this utility model, the end cap, the first support plate and the second support plate form a triangle.

[0026] As an improvement to this utility model, a triangle is formed between one of the side covers, part of the end cover and the first support plate, and a triangle is formed between the other side cover, part of the end cover and the second support plate.

[0027] As an improvement of this utility model, the support assembly has two components, each of which includes a first support plate and a second support plate. The first end of the first support plate and the first end of the second support plate of one support assembly are rotatably connected to the two ends of the upper end cap, respectively. The first end of the first support plate and the first end of the second support plate of the other support assembly are rotatably connected to the two ends of the lower end cap, respectively.

[0028] As an improvement to this utility model, the end cap, the side cap, the first support plate, and the second support plate are all made of cardboard.

[0029] As an improvement of this utility model, the connecting shaft includes a first limiting part, an insertion part, and a second limiting part. The insertion part is inserted into the insertion hole on the first end of the first support plate, the insertion hole on the first end of the second support plate, and the insertion holes on both ends of the end cap. The first limiting part abuts against the outer surface of the first support plate and / or the outer surface of the second support plate, and the second limiting part is grounded on the inner surface of the end cap.

[0030] The beneficial effects of this utility model are as follows: With the above-mentioned structure, when using the product, the support component is rotated so that the second end of the support component corresponds to the installation position on the end cap, and the second end of the support component is connected to the end cap. The support component is located between the two end caps, which limits the distance between the two end caps and fixes the filter element in the unfolded state, ensuring the stability of the product. When storing the product, the second end of the support component is detached from the end cap, so that the two end caps move relative to each other to fold the filter element. The support component is rotated so that it is placed side by side with the filter element, reducing the size of the product and making it convenient for users to carry and store the product. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0033] Figure 1 This is a schematic diagram of the overall structure of the filter of this utility model in use from one angle;

[0034] Figure 2 This is a schematic diagram of the overall structure of the filter of this utility model from another angle when it is in use;

[0035] Figure 3 This is a schematic diagram of the overall structure of the filter in its stored state from one angle.

[0036] Figure 4 This is a schematic diagram of the overall structure of the filter in its stored state from another angle;

[0037] Figure 5 This is a schematic diagram of the first exploded structure of the filter of this utility model;

[0038] Figure 6 This is a schematic diagram of the second exploded structure of the filter of this utility model;

[0039] Figure 7 This is a side view of the connector of the filter of this utility model;

[0040] Figure 8 This is a partial cross-sectional view of the filter of this utility model.

[0041] Explanation of reference numerals in the attached figures:

[0042] 100, Filter element; 200, End cap; 201, Second connecting hole; 202, Third connecting hole; 210, First cover portion; 220, First connecting portion; 300, Support assembly; 301, First connecting hole; 310, First support plate; 320, Second support plate; 400, Side cover; 401, Fourth connecting hole; 410, Second cover portion; 420, Second connecting portion; 500, Connecting shaft; 510, First limiting portion; 520, Insertion portion; 530, Second limiting portion; 600, Connector; 610, Press cap; 620, Insertion rod; 621, Snap-fit ​​portion; 622, Inclined surface. Detailed Implementation

[0043] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0044] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0045] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0046] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0047] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0048] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0049] Reference Figures 1 to 8 A pleated filter, comprising:

[0050] A filter element 100 having an upper end and a lower end, and a pleated medium extending between the upper end and the lower end;

[0051] Two end caps 200 are respectively connected to the upper and lower ends of the filter element 100. The two end caps 200 are close to or far from each other so that the filter element 100 can be switched between a storage state and a use state.

[0052] A support assembly 300, wherein a first end of the support assembly 300 is rotatably connected to a first end cap 200, and a second end of the support assembly 300 is detachably connected to a second end cap 200;

[0053] When the second end of the support assembly 300 is connected to the second end cap 200 and the filter element 100 is in a retracted state, the filter element 100 is unfolded; when the filter element 100 is in a usable state, the second end of the support assembly 300 is detached from the second end cap 200 to allow the filter element 100 to fold.

[0054] With the above-described structure, when using the product, rotating the support assembly 300 aligns the second end of the support assembly 300 with the mounting position on the end cap 200, connecting the second end of the support assembly 300 to the end cap 200. The support assembly 300 is located between the two end caps 200, limiting the distance between them and fixing the filter element 100 in the unfolded state, thus ensuring the stability of the product. When storing the product, the second end of the support assembly 300 is detached from the end cap 200, allowing the two end caps 200 to move relative to each other to fold the filter element 100. Rotating the support assembly 300 allows it to be placed side by side with the filter element 100, reducing the product's volume and making it convenient for users to carry and store the product.

[0055] In this embodiment, two side covers 400 are also included. The two side covers 400 are detachably connected at both ends to the two end covers 200. The two end covers 200 and the two side covers 400 form a frame with two opposing openings. The filter element 100 is located within the frame and at least partially exposed through the openings. With this structure, when using the product, the second end of the support assembly 300 is connected to the end cover 200, at which point the filter element 100 is in an unfolded state. Then, the two side covers 400 are connected to the two end covers 200. The end covers 200 and the side covers 400 form a roughly cuboid frame, which further supports the two end covers 200 and the filter element 100 between them, ensuring product stability and thus guaranteeing the air purifier's filtration effect. The two opposing openings allow airflow to pass through the filter element 100, enabling efficient air purification.

[0056] In this embodiment, the support assembly 300 includes a first support plate 310 and a second support plate 320. The first ends of the first support plate 310 and the second support plate 320 are rotatably connected to both ends of an end cap 200. The second ends of both the first support plate 310 and the second support plate 320 are connected to the middle of another end cap 200. With this structure, the second ends of both the first support plate 310 and the second support plate 320 are connected to the middle of an end cap 200, simplifying the installation process. During use, the user can fix the second ends of both the first support plate 310 and the second support plate 320 in one go, making installation convenient. Furthermore, it also has a foolproof function, preventing users from confusing the installation positions of the second ends of the first support plate 310 and the second support plate 320, thus avoiding installation errors and improving the user experience.

[0057] In this embodiment, a connecting shaft 500 is also included. The first end of the first support plate 310 and the first end of the second support plate 320 are rotatably connected to both ends of the end cap 200 via the connecting shaft 500. With this structure, the connecting shaft 500 connects to the first ends of the first support plate 310 and the second support plate 320, and simultaneously connects to both ends of the end cap 200. This ensures a stable connection between the first ends of the first support plate 310 and the second support plate 320 and both ends of the end cap 200, while allowing the first support plate 310 and the second support plate 320 to rotate freely relative to the end cap 200, resulting in a more stable structure.

[0058] In this embodiment, a connector 600 is also included. The second ends of the first support plate 310 and the second support plate 320 are each provided with a first connecting hole 301, and the middle portion of the end cap 200 is provided with a second connecting hole 201. The connector 600 is inserted into the first connecting hole 301 and the second connecting hole 201. With this structure, in use, the connector 600 is inserted into the first connecting hole 301 and the second connecting hole 201 to fix the second ends of the first support plate 310 and the second support plate 320 to the middle portion of an end cap 200. This allows the first support plate 310 and the second support plate 320 to effectively support the two end caps 200, limiting the distance between them and fixing the filter element 100 in the unfolded state, thus ensuring product stability.

[0059] In this embodiment, the end cap 200 has third connecting holes 202 at both ends, and the side cap 400 has fourth connecting holes 401 at both ends. The connector 600 is inserted into the third connecting holes 202 and the fourth connecting holes 401 to connect the end cap 200 and the side cap 400. With this structure, during use, the position of the side cap 400 relative to the end cap 200 is adjusted so that the fourth connecting hole 401 aligns with the third connecting hole 202. The connector 600 is then inserted along the third connecting hole 202 and the fourth connecting hole 401 to ensure a stable connection between the end cap 200 and the side cap 400. This connection is convenient and the structure is stable.

[0060] In this embodiment, the end cap 200 includes a first closing portion 210 and a first connecting portion 220. A first crease is provided between the first closing portion 210 and the first connecting portion 220. The first closing portion 210 is connected to the upper or lower end of the filter element 100. The first connecting portion 220 is bent along the first crease and covers at least a portion of the filter element 100. The side cap 400 includes a second closing portion 410 and a second connecting portion 420. A second crease is provided between the second closing portion 410 and the second connecting portion 420. The second closing portion 410 abuts against the left or right side of the filter element 100. The second connecting portion 420 is bent along the second crease and covers at least a portion of the filter element 100. With the above-described structure, during use, the first cover portion 210 and the first connecting portion 220 are bent along the first crease, and the second cover portion 410 and the second connecting portion 420 are bent along the second crease, so that the first cover portion 210 and the first connecting portion 220 are approximately perpendicular, and the second cover portion 410 and the second connecting portion 420 are approximately perpendicular. Then, the first connecting portion 220 and the second connecting portion 420 are connected by the connector 600, and the end of the first connecting portion 220 abuts against the inner surface of the second cover portion 410, which can effectively prevent the frame formed by the end cover 200 and the side cover 400 from deforming and improve the stability of the product. At the same time, the first connecting portion 220 and the second connecting portion 420 at least partially cover the edge of the filter element 100, which can effectively protect the filter element 100 and prevent the edge of the filter element 100 from being damaged when installing the filter element 100, thus ensuring the filtration effect of the product.

[0061] In this embodiment, the connecting shaft 500, the second connecting hole 201, and the third connecting hole 202 are all disposed on the first connecting portion 220, and the fourth connecting hole 401 is disposed on the second connecting portion 420. With this structure, when using the product, the plane of the first connecting portion 220 and the plane of the second connecting portion 420 are approximately parallel. Distributing the third connecting hole 202 on the first connecting portion 220 and the fourth connecting hole 401 on the second connecting portion 420 allows the user to easily align the third connecting hole 202 and the fourth connecting hole 401, facilitating product installation. The connecting shaft 500 and the second connecting hole 201 are disposed on the first connecting portion 220, facilitating the user to connect the first support plate 310 and the second support plate 320 to the end cap, enhancing user convenience.

[0062] In this embodiment, a portion of the third connecting hole 202 is disposed on the connecting shaft 500 and extends through the connecting shaft 500. By configuring the above structure, the partial placement of the third connecting hole 202 on the connecting shaft 500 strengthens the sidewalls of the third connecting hole 202, stabilizing the product structure. Furthermore, it eliminates the need for additional third connecting holes 202, making the first connecting portion 220 more stable and robust.

[0063] In this embodiment, the connector 600 includes a pressing cap 610 and an insertion rod 620. The pressing cap 610 is connected to one end of the insertion rod 620, and the insertion rod 620 is inserted into the first connecting hole 301 and the second connecting hole 201, or the third connecting hole 202 and the fourth connecting hole 401. With this structure, during use, the insertion rod 620 is aligned with the first connecting hole 301 and the second connecting hole 201, or the third connecting hole 202 and the fourth connecting hole 401, and the pressing cap 610 is pressed, causing the insertion rod 620 to be inserted into the first connecting hole 301 and the second connecting hole 201, or the third connecting hole 202 and the fourth connecting hole 401, facilitating product installation for the user.

[0064] In this embodiment, an annular locking portion 621 extends outward along the insertion rod 620 and engages with the inner wall of the end cap 200. Through this structure, the locking portion 621 engages with the inner wall of the end cap 200, effectively limiting the insertion rod 620 and preventing it from disengaging. This ensures a stable connection between the first support plate 310 and the second support plate 320 and the end cap 200, or a stable connection between the end cap 200 and the side cover 400, thus guaranteeing product stability.

[0065] In this embodiment, the diameter of the snap-fit ​​portion 621 matches the diameter of the second connecting hole 201 and / or the third connecting hole 202. With this structure, during use, pressing the pressing cap 610 causes the insertion rod 620 to be inserted into the first connecting hole 301 and the second connecting hole 201, or the third connecting hole 202 and the fourth connecting hole 401. The matching diameter of the snap-fit ​​portion 621 with the second connecting hole 201 and / or the third connecting hole 202 facilitates the snap-fit ​​portion 621 passing through the second connecting hole 201 and / or the third connecting hole 202, and allows the snap-fit ​​portion 621 to be stably snapped onto the inner wall of the end cap 200, improving product stability.

[0066] In this embodiment, the snap-fit ​​portion 621 includes multiple snap-fit ​​portions 621, and there is a gap between each snap-fit ​​portion 621. By setting the above structure, providing multiple snap-fit ​​portions 621, and having gaps between each snap-fit ​​portion 621, it can be ensured that at least one snap-fit ​​portion 621 can be stably snapped into the inner sidewall of the end cover 200, improving the stability of the product, and providing a better feel for the user when installing the connector 600.

[0067] In this embodiment, the side of the snap-fit ​​portion 621 away from the pressing cap 610 is an inclined slope 622. With this structure, the inclined slope 622 makes it easier for the snap-fit ​​portion 621 to be inserted along the first connecting hole 301, the second connecting hole 201, the third connecting hole 202, and the fourth connecting hole 401, facilitating user operation and reducing installation difficulty.

[0068] In this embodiment, the end cap 200, the first support plate 310, and the second support plate 320 form a triangle. This structural arrangement, where the end cap 200, the first support plate 310, and the second support plate 320 form a triangle, effectively enhances product stability, prevents product deformation, and thus ensures the product's filtration effect, making it convenient for users.

[0069] In this embodiment, a triangle is formed between one side cover 400, a portion of the end cover 200, and the first support plate 310, and another triangle is formed between the other side cover 400, a portion of the end cover 200, and the second support plate 320. This structural arrangement, with one side cover 400, a portion of the end cover 200, and the first support plate 310 forming a triangle, and the other side cover 400, a portion of the end cover 200, and the second support plate 320 forming a triangle, further ensures the stability of the product.

[0070] In this embodiment, there are two support components 300. Each support component 300 includes a first support plate 310 and a second support plate 320. The first end of the first support plate 310 and the first end of the second support plate 320 of one support component 300 are rotatably connected to the two ends of the upper end cap 200, respectively. The first end of the first support plate 310 and the first end of the second support plate 320 of the other support component 300 are rotatably connected to the two ends of the lower end cap 200, respectively. With the above structure, the two support components 300 are correspondingly arranged on the front and rear sides of the end cap 200, which can improve the stability of the product. At the same time, the first support plate 310 and the second support plate 320 of the first support component 300 form an inverted triangle with the upper end cap 200, and the first support plate 310 and the second support plate 320 of the second support component 300 form an upright triangle with the lower end cap 200. The two cooperate with each other, making the structure more stable.

[0071] In this embodiment, the end cap 200, the side cap 400, the first support plate 310, and the second support plate 320 are all made of cardboard. With the above-described structure, the cardboard end cap 200, side cap 400, first support plate 310, and second support plate 320 are inexpensive, more environmentally friendly, lighter, and easier for users to carry.

[0072] In this embodiment, the connecting shaft 500 includes a first limiting part 510, an insertion part 520, and a second limiting part 530. The insertion part 520 is inserted into the insertion hole on the first end of the first support plate 310, the insertion hole on the first end of the second support plate 320, and the insertion holes on both ends of the end cap 200. The first limiting part 510 abuts against the outer surface of the first support plate 310 and / or the outer surface of the second support plate 320, and the second limiting part 530 is grounded on the inner surface of the end cap 200. With the above-described structure, during use, the insertion part 520 is inserted into the insertion hole on the first end of the first support plate 310, the insertion hole on the first end of the second support plate 320, and the insertion holes on both ends of the end cap 200, facilitating the rotation of the first support plate 310 and the second support plate 320 relative to the end cap 200. The first limiting part 510 abuts against the outer surface of the first support plate 310 and / or the outer surface of the second support plate 320, and the second limiting part 530 abuts against the inner surface of the end cap 200, effectively limiting the first support plate 310, the second support plate 320, and the end cap 200, thereby improving the stability of the product.

Claims

1. A pleated filter, characterized in that, include: A filter element (100) having an upper end and a lower end, and a pleated medium extending between the upper end and the lower end; Two end caps (200) are respectively connected to the upper and lower ends of the filter element (100). The two end caps (200) are close to or far from each other so that the filter element (100) can be switched between a storage state and a use state. A support assembly (300) having a first end rotatably connected to a first end cap (200) and a second end detachably connected to a second end cap (200); When the second end of the support assembly (300) is connected to the second end cap (200) and the filter element (100) is in a retracted state, the filter element (100) is unfolded; when the filter element (100) is in a working state, the second end of the support assembly (300) is detached from the second end cap (200) to allow the filter element (100) to fold.

2. The pleated filter according to claim 1, characterized in that, It also includes two side caps (400), each of which is detachably connected at both ends to two end caps (200). The two end caps (200) and the two side caps (400) form a frame having two opposing openings. The filter element (100) is located within the frame and is at least partially exposed through the openings.

3. The pleated filter according to claim 2, characterized in that, The support assembly (300) includes a first support plate (310) and a second support plate (320). The first end of the first support plate (310) and the first end of the second support plate (320) are rotatably connected to both ends of one end cap (200). The second ends of the first support plate (310) and the second end of the second support plate (320) are both connected to the middle of the other end cap (200).

4. The pleated filter according to claim 3, characterized in that, It also includes a connecting shaft (500), wherein the first end of the first support plate (310) and the first end of the second support plate (320) are rotatably connected to both ends of the end cap (200) via the connecting shaft (500).

5. The pleated filter according to claim 4, characterized in that, It also includes a connector (600), wherein the second end of the first support plate (310) and the second end of the second support plate (320) are provided with a first connecting hole (301), and the middle part of the end cap (200) is provided with a second connecting hole (201). The connector (600) is inserted into the first connecting hole (301) and the second connecting hole (201).

6. The pleated filter according to claim 5, characterized in that, The end cap (200) has a third connecting hole (202) at both ends, and the side cap (400) has a fourth connecting hole (401) at both ends. The connector (600) is inserted into the third connecting hole (202) and the fourth connecting hole (401) to connect the end cap (200) and the side cap (400).

7. The pleated filter according to claim 6, characterized in that, The end cap (200) includes a first closing portion (210) and a first connecting portion (220), with a first crease between the first closing portion (210) and the first connecting portion (220). The first closing portion (210) is connected to the upper or lower end of the filter element (100), and the first connecting portion (220) is bent along the first crease and covers at least a portion of the filter element (100). The side cap (400) includes a second closing portion (410) and a second connecting portion (420), with a second crease between the second closing portion (410) and the second connecting portion (420). The second closing portion (410) abuts against the left or right side of the filter element (100), and the second connecting portion (420) is bent along the second crease and covers at least a portion of the filter element (100).

8. The pleated filter according to claim 7, characterized in that, The connecting shaft (500), the second connecting hole (201) and the third connecting hole (202) are all disposed on the first connecting part (220), and the fourth connecting hole (401) is disposed on the second connecting part (420).

9. The pleated filter according to claim 7, characterized in that, Part of the third connecting hole (202) is disposed on the connecting shaft (500) and extends through the connecting shaft (500).

10. The pleated filter according to claim 6, characterized in that, The connector (600) includes a pressing cap (610) and an insert rod (620). The pressing cap (610) is connected to one end of the insert rod (620), and the insert rod (620) is inserted into the first connecting hole (301) and the second connecting hole (201) or the third connecting hole (202) and the fourth connecting hole (401).

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