Filter element frame

Abstract

The utility model discloses a filter element frame which is used for being connected to a filter element and comprises a first frame, a second frame and a supporting assembly, and the first frame is used for being connected to the upper surface of the filter element; the second frame is connected to the lower surface of the filter element; the upper end of the supporting assembly is connected to the first frame, and the lower end is connected to the second frame. Wherein each of the first frame and the second frame comprises four slender components, the four slender components are sequentially connected end to end, and every two adjacent slender components are rotatably connected, so that the filter element frame rotates between an unfolding position and a folding position. Through the arrangement of the structure, during use, the supporting assembly is located between the first frame and the second frame to support the first frame, the second frame and the filter element, so that the stability of the filter element frame is improved, the filter element is prevented from being deformed, and the filtering effect of the filter element is guaranteed; moreover, the shape of the filter element frame can be changed by relative rotation of the two adjacent slender members.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering devices, in particular to a filter element frame. Background Art

[0002] Nowadays, people pay more and more attention to the quality of air. Therefore, people generally use air filtering devices such as air purifiers and fresh air fans to ensure the air quality. As an important component in air filtering devices such as air purifiers and fresh air fans, the filtering component is directly related to the filtering effect of the product.

[0003] In existing products, usually a filter element and a filter element frame are combined to form a filtering component, and the filtering component is installed in an air filter. On the one hand, it can improve the stability of the product, and on the other hand, it is also convenient for users to disassemble and assemble the filtering component; however, in the assembly process of the filter element and the filter element frame in existing products, it is relatively complex and difficult for users to operate. Moreover, the structure of the filter element frame in existing products is not stable, and it is easy to cause deformation of the filter element frame when installing the filtering component, thereby causing damage to the filter element, affecting the filtering effect of the product, and bringing property losses to users.

[0004] Therefore, the utility model provides a filter element frame, which can effectively solve the above problems, has a simple structure and strong stability, and can effectively fix the filter element. Summary of the Utility Model

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a filter element frame with a simple structure and strong stability, which can effectively fix the filter element.

[0006] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0007] A filter element frame for connecting to a filter element, comprising:

[0008] A first frame for connecting to the upper surface of the filter element;

[0009] A second frame for connecting to the lower surface of the filter element;

[0010] A support assembly, the upper end of the support assembly is connected to the first frame, and the lower end of the support assembly is connected to the second frame;

[0011] Wherein, each of the first frame and the second frame includes four slender members, the four slender members are sequentially connected end to end, and two adjacent slender members are rotatably connected, so that the filter element frame can rotate between an unfolded position and a folded position.

[0012] As an improvement of the present utility model, the first frame and the second frame are both provided with insertion slots, and the upper and lower ends of the support assembly are respectively inserted into the insertion slots.

[0013] As an improvement of the present utility model, the support assembly includes a plurality of support rods, and the support rods are spaced apart on the outer sides of the first frame and the second frame.

[0014] As an improvement of the present utility model, the four slender members include two first slender members and two second slender members. The first end of the first slender member is rotatably connected to the first end of the second slender member, and the second end of the first slender member is rotatably connected to the second end of the second slender member.

[0015] As an improvement of the present utility model, a rotating shaft is provided at the first end of the first slender member, a rotating shaft hole is provided at the first end of the second slender member, and the rotating shaft is rotatably inserted into the rotating shaft hole.

[0016] As an improvement of the present utility model, a limiting portion is provided at the end of the rotating shaft, and the limiting portion abuts against the edge of the side wall of the rotating shaft hole.

[0017] As an improvement of the present utility model, a first guiding inclined surface is provided on the side of the limiting portion away from the rotating shaft, a second guiding inclined surface is provided at one end of the side wall of the rotating shaft hole away from the limiting portion, and a deformation slot penetrating the side wall of the rotating shaft hole is provided at the first end of the second slender member, and the deformation slot communicates with the rotating shaft hole.

[0018] As an improvement of the present utility model, it further includes a foldable connecting piece, one end of the connecting piece is connected to the second end of the first slender member, and the other end of the connecting piece is connected to the second end of the second slender member.

[0019] As an improvement of the present utility model, a first locking member is provided at the first end of the first slender member, a second locking member is provided at the first end of the second slender member, and when the filter element frame is in the folded position, the first locking member is connected to the second locking member.

[0020] As an improvement of the present utility model, a third locking member is provided at the first end of the first slender member, a fourth locking member is provided at the first end of the second slender member, and when the filter element frame is in the unfolded position, the third locking member is connected to the fourth locking member.

[0021] As an improvement of the present utility model, a first connecting plate is provided at the first end of the first slender member, a second connecting plate is provided at the first end of the second slender member, and the first connecting plate and the second connecting plate are stacked up and down.

[0022] As an improvement of the present utility model, a slider is convexly provided on one side of the first connecting plate facing the second connecting plate, the second connecting plate is provided with an arc-shaped sliding rail penetrating up and down, the arc-shaped sliding rail is arranged around the center of the rotating shaft, and the slider is inserted into the arc-shaped sliding rail.

[0023] As an improvement of the present utility model, a contact portion is provided at the end of the slider, and the contact portion abuts against the upper surface or the lower surface of the second connecting plate.

[0024] As an improvement of the present utility model, a plurality of the arc-shaped sliding rails are provided, and the plurality of arc-shaped sliding rails are concentrically arranged.

[0025] As an improvement of the present utility model, the outer edges of the first connecting plate and the second connecting plate are both arc-shaped.

[0026] As an improvement of the present utility model, a third connecting plate is provided at the second end of the first slender member, and the third connecting plate at least partially covers the second end of the second slender member.

[0027] As an improvement of the present utility model, an arc-shaped groove is provided at the second end of the second slender member. When the filter element frame is in the folded position, the third connecting plate is inserted into the arc-shaped groove.

[0028] As an improvement of the present utility model, a rotation mark is provided on the surface of the first end of the second slender member.

[0029] As an improvement of the present utility model, a protection portion is formed by extending the inner edge or the outer edge of the first slender member and the inner edge or the outer edge of the second slender member in the direction facing the filter element, and the protection portion is used to at least partially shield the edge of the filter element.

[0030] As an improvement of the present utility model, reinforcing ribs are provided on one side of the first slender member facing the filter element and on one side of the second slender member facing the filter element.

[0031] The beneficial effects of the present utility model are as follows: Through the setting of the above structure, during use, the support assembly is located between the first frame and the second frame to support the first frame, the second frame and the filter element, improving the stability of the filter element frame, thereby preventing the filter element from deforming and ensuring the filtering effect of the filter element; moreover, the two adjacent slender members can rotate relative to each other to change the shape of the filter element frame. When the filter element frame is in the unfolded position, the two adjacent slender members are substantially perpendicular, and the filter element frame is in a cubic shape, which can expand the filtering area and improve the filtering efficiency; when the filter element frame is in the folded position, the two adjacent slender members are substantially parallel, which can reduce the width of the product, reduce the volume of the product, and facilitate the storage and carrying of the product. Description of the Drawings

[0032] To more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. The drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0033] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0034] Figure 1 It is a schematic diagram of the overall structure of the present utility model in the unfolded position;

[0035] Figure 2 It is a schematic diagram of the overall structure of the present utility model in the folded position;

[0036] Figure 3 It is an exploded structure diagram of the present utility model;

[0037] Figure 4 is Figure 3 An enlarged view of the area A;

[0038] Figure 5 It is a top view of the present utility model;

[0039] Figure 6 is the present utility model Figure 5 A-A sectional view;

[0040] Figure 7 is Figure 6 An enlarged view of the area B.

[0041] Explanation of reference numerals:

[0042] 100, the first frame; 102, the insertion groove; 110, the first slender member; 111, the rotating shaft; 112, the limiting portion; 113, the first guiding inclined surface; 114, the first locking member; 115, the third locking member; 116, the first connecting plate; 117, the slider; 118, the third connecting plate; 120, the second slender member; 121, the rotating shaft hole; 122, the second guiding inclined surface; 123, the deformation slotted groove; 124, the second locking member; 125, the fourth locking member; 126, the second connecting plate; 127, the arc-shaped slide rail; 128, the abutting portion; 200, the second frame; 211, the arc-shaped groove; 212, the rotation mark; 213, the protection portion; 214, the reinforcing rib; 300, the support assembly; 310, the support rod; 400, the connecting piece. Detailed implementation manners

[0043] To make the above objects, features, and advantages of the present application more apparent and understandable, the following provides a detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings. A lot of specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0044] In the description of the present application, it should be understood that if terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the accompanying drawings. These are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0045] In addition, if terms such as "first" and "second" appear, these terms are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0046] In the present application, unless otherwise clearly specified and limited, if terms such as "install", "connect", "couple", "fix", etc. appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0047] In this application, unless otherwise clearly specified and defined, when a first feature is described as being "on" or "under" a second feature or the like, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature has a lower horizontal height than the second feature.

[0048] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate 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 intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0049] Refer to Figures 1 to 7 , a filter element frame for connecting to a filter element, comprising:

[0050] A first frame 100, the first frame 100 being used for connecting to the upper surface of the filter element;

[0051] A second frame 200, the second frame 200 being used for connecting to the lower surface of the filter element;

[0052] A support assembly 300, the upper end of the support assembly 300 being connected to the first frame 100, and the lower end of the support assembly 300 being connected to the second frame 200;

[0053] Wherein, each of the first frame 100 and the second frame 200 includes four elongated members, the four elongated members are sequentially connected end to end, and adjacent two of the elongated members are rotatably connected so that the filter element frame can rotate between an unfolded position and a folded position.

[0054] Through the arrangement of the above structure, when in use, the support assembly 300 is located between the first frame 100 and the second frame 200 to support the first frame 100, the second frame 200 and the filter element, thereby improving the stability of the filter element frame, thereby preventing the filter element from deforming and ensuring the filtering effect of the filter element; moreover, the two adjacent slender members rotate relative to each other, which can change the shape of the filter element frame. When the filter element frame is in the expanded position, the two adjacent slender members are basically vertical, and the filter element frame is in a cubic shape, which can expand the filtering area and improve the filtering efficiency; when the filter element frame is in the folded position, the two adjacent slender members are basically parallel, which can reduce the width of the product, reduce the volume of the product, and facilitate the storage and carrying of the product.

[0055] In this embodiment, the first frame 100 and the second frame 200 are both provided with an insertion slot 102, and the upper and lower ends of the support assembly 300 are respectively inserted into the insertion slot 102. Through the above-mentioned structure, when in use, the end of the support assembly 300 is inserted into the insertion slot 102 to achieve a stable connection between the first frame 100 and the second frame 200 and the support assembly 300; and when storing the product, the end of the support assembly 300 is detached from the insertion slot 102, so that the product can be divided into three parts: the first frame 100, the second frame 200 and the support assembly 300, and then the slender member is rotated to make the filter element frame in a folded position, effectively reducing the volume of the product and making it convenient for users to carry and store.

[0056] In this embodiment, the support assembly 300 includes a plurality of support rods 310, and the support rods 310 are arranged at intervals outside the first frame 100 and outside the second frame 200. Through the arrangement of the above structure, the plurality of support rods 310 are evenly arranged at intervals, which can effectively support the first frame 100 and the second frame 200, so that the first frame 100 and the second frame 200 are evenly stressed, thereby improving the stability of the product.

[0057] In this embodiment, the four slender members include two first slender members 110 and two second slender members 120, the first end of the first slender member 110 is rotatably connected to the first end of the second slender member 120, and the second end of the first slender member 110 is rotatably connected to the second end of the second slender member 120. Through the above-mentioned structure, the two first slender members 110 are arranged opposite to each other, the two second slender members 120 are arranged opposite to each other, and the two first slender members 110 and the two second slender members 120 are connected head to tail in sequence to form a rectangular first frame 100 or a second frame 200.

[0058] In this embodiment, a rotating shaft 111 is provided at the first end of the first slender member 110, and a rotating shaft hole 121 is provided at the first end of the second slender member 120. The rotating shaft 111 is rotatably inserted into the rotating shaft hole 121. Through the above structural arrangement, when assembling the product, the rotating shaft 111 is inserted into the rotating shaft hole 121, so that the first slender member 110 and the second slender member 120 can rotate around the axis of the rotating shaft 111, and the rotating structure is stable.

[0059] In this embodiment, a limiting portion 112 is provided at the end of the rotating shaft 111, and the limiting portion 112 abuts against the edge of the side wall of the rotating shaft hole 121. Through the above structural arrangement, during use, the end of the rotating shaft 111 passes through the rotating shaft hole 121, and the limiting portion 112 abuts against the edge of the side wall of the rotating shaft hole 121, which can prevent the rotating shaft 111 from moving along the axial direction and prevent the rotating shaft 111 from disengaging from the rotating shaft hole 121, thereby improving the stability of the product.

[0060] In this embodiment, a first guiding inclined surface 113 is provided on the side of the limiting portion 112 away from the rotating shaft 111, a second guiding inclined surface 122 is provided at one end of the side wall of the rotating shaft hole 121 away from the limiting portion 112, and a deformation slot 123 penetrating the side wall of the rotating shaft hole 121 is provided at the first end of the second slender member 120. The deformation slot 123 communicates with the rotating shaft hole 121. Through the above structural arrangement, when assembling the product, the rotating shaft 111 is aligned and inserted into the rotating shaft hole 121, and the first guiding inclined surface 113 slides relative to the second guiding inclined surface 122, which can better guide the rotating shaft 111 into the rotating shaft hole 121; since the diameter of the limiting portion 112 is larger than the diameter of the main body of the rotating shaft 111, the limiting portion 112 drives the side wall of the rotating shaft hole 121 to deform, and the deformation slot 123 can make the side wall of the rotating shaft hole 121 more easily elastically deformed, reducing the assembly difficulty, so that the limiting portion 112 at the end of the rotating shaft 111 passes through the rotating shaft hole 121, and the end surface of the limiting portion 112 abuts against the edge of the side wall of the rotating shaft hole 121 to complete the assembly of the product.

[0061] In this embodiment, it further includes a foldable connecting piece 400. One end of the connecting piece 400 is connected to the second end of the first elongated member 110, and the other end of the connecting piece 400 is connected to the second end of the second elongated member 120. Through the above structural arrangement, on the one hand, the connecting piece 400 can connect the second end of the first elongated member 110 and the second end of the second elongated member 120, and on the other hand, it can allow the first elongated member 110 and the second elongated member 120 to rotate relative to each other, and the assembly is simpler. Preferably, mounting grooves are provided at the second end of the first elongated member 110 and the second end of the second elongated member 120, and both ends of the connecting piece 400 are respectively placed in the two mounting grooves and fixed to realize the connection between the connecting piece 400 and the first elongated member 110 and the second elongated member 120. Preferably, the connecting piece 400 is a flexible piece made of materials such as leather and rubber, which can not only realize the connection but also be repeatedly bent to realize the relative rotation between the first elongated member 110 and the second elongated member 120.

[0062] In this embodiment, the first elongated member 110 is provided with a first locking member 114, and the second elongated member 120 is provided with a second locking member 124. When the filter element frame is in the folded position, the first locking member 114 is connected to the second locking member 124. Through the above structural arrangement, when the filter element frame is in the folded position, the first elongated member 110 and the second elongated member 120 are arranged side by side left and right. At this time, the first locking member 114 is connected to the second locking member 124 to prevent the relative rotation between the first elongated member 110 and the second elongated member 120, so that the filter element frame is kept in the folded position and the stability of the product is improved. Preferably, the first locking member 114 and the second locking member 124 are respectively a clamping block and a clamping groove. The cooperation of the clamping block and the clamping groove not only makes the connection more stable, but also makes the product structure simpler and the production efficiency higher.

[0063] In this embodiment, a third locking member 115 is provided at the first end of the first elongated member 110, and a fourth locking member 125 is provided at the first end of the second elongated member 120. When the filter element frame is in the unfolded position, the third locking member 115 is connected to the fourth locking member 125. Through the above structural arrangement, when the filter element frame is in the unfolded position, the first elongated member 110 and the second elongated member are substantially perpendicular. Two first elongated members 110 and two second elongated members 120 form a rectangular first frame 100 or second frame 200, making the filter element frame roughly cube-shaped. Then, the filter element is connected to the four side walls of the filter element frame, which can effectively support the filter element, increase the surface area of the filter element, and improve the filtering effect of the product.

[0064] In this embodiment, a first connecting plate 116 is provided at the first end of the first slender member 110, and a second connecting plate 126 is provided at the first end of the second slender member 120. The first connecting plate 116 and the second connecting plate 126 are stacked one above the other. With the above structure, the first connecting plate 116 and the second connecting plate 126 are stacked one above the other, which can effectively cover the gap between the first end of the first slender member 110 and the first end of the second slender member 120, so as to prevent the user from being pinched when the first slender member 110 and the second slender member 120 rotate relative to each other, and the user experience is better.

[0065] In this embodiment, a slider 117 protrudes from the side of the first connecting plate 116 facing the second connecting plate 126. The second connecting plate 126 is provided with an arc-shaped slide rail 127 that penetrates up and down. The arc-shaped slide rail 127 is arranged around the center of the rotating shaft 111, and the slider 117 is inserted into the arc-shaped slide rail 127. With the above structure, during use, the slider 117 is inserted into the arc-shaped slide rail 127, and the first slender member 110 and the second slender member 120 rotate relative to each other. The slider 117 slides in the arc-shaped slide rail 127, which can not only limit the relative positions of the first connecting plate 116 and the second connecting plate 126, making the relative rotation of the first slender member 110 and the second slender member 120 smoother, but also improve the strength of the product and ensure the stability of the product.

[0066] In this embodiment, an abutting portion 128 is provided at the end of the slider 117, and the abutting portion 128 abuts against the upper surface or the lower surface of the second connecting plate 126. With the above structure, when the slider 117 slides in the arc-shaped slide rail 127, the abutting portion 128 slidably abuts against the upper surface or the lower surface of the second connecting plate 126, which can effectively prevent the slider 117 from disengaging from the arc-shaped slide rail 127 and ensure the stability of the product.

[0067] In this embodiment, there are a plurality of the arc-shaped slide rails 127, and the plurality of arc-shaped slide rails 127 are concentrically arranged. With the above structure, the plurality of arc-shaped slide rails 127 are concentrically arranged, and the plurality of sliders 117 are respectively inserted into each arc-shaped slide rail 127, further limiting the positions of the first connecting plate 116 and the second connecting plate 126, and making the product structure more stable.

[0068] In this embodiment, the outer edges of the first connecting plate 116 and the second connecting plate 126 are both arc-shaped. With the above structure, the outer edges of the first connecting plate 116 and the second connecting plate 126 are arc-shaped. On the one hand, it makes the appearance of the product more beautiful. On the other hand, it can also make the corners of the filter element frame smoother, prevent the user from accidentally hitting the corners and getting injured, and improve the safety of product use and the user experience.

[0069] In this embodiment, a third connecting plate 118 is provided at the second end of the first elongated member 110, and the third connecting plate 118 at least partially covers the second end of the second elongated member 120. Through the above structure, the third connecting plate 118 at least partially covers the second end of the second elongated member 120, which can effectively cover the gap between the second end of the first elongated member 110 and the second end of the second elongated member 120, so as to prevent pinching the user when the first elongated member 110 and the second elongated member 120 rotate relative to each other, and the user experience is better; and preferably, the outer edge of the third connecting plate 118 is arc-shaped, making the product more beautiful and the corners smoother.

[0070] In this embodiment, an arc-shaped groove 211 is provided at the second end of the second elongated member 120. When the filter element frame is in the folded position, the third connecting plate 118 is inserted into the arc-shaped groove 211. Through the above structure, when the first elongated member 110 and the second elongated member 120 adjacent up and down rotate relative to each other, the third connecting plate 118 gradually moves towards the arc-shaped groove 211 until it is completely inserted into the arc-shaped groove 211. At this time, the filter element frame is in the folded position. The arc-shaped groove 211 can effectively accommodate the third connecting plate 118 and prevent the third connecting plate 118 from abutting against the second end of the second elongated member 120.

[0071] In this embodiment, a rotation mark 212 is provided on the surface of the first end of the second elongated member 120. Through the above structure, the rotation mark 212 can show the rotation direction, prompt the user's usage method, and facilitate the user's use.

[0072] In this embodiment, a protection portion 213 is formed by extending the inner edge or outer edge of the first elongated member 110 and the inner edge or outer edge of the second elongated member 120 in the direction towards the filter element, and the protection portion 213 is used to at least partially shield the edge of the filter element. Through the above structure, when the filter element is installed in the filter element frame, the protection portion 213 is located outside the edge of the filter element, which can effectively protect the filter element, prevent the filter element from being worn and damaged, extend the service life of the filter element, and ensure the filtering effect of the filter element.

[0073] In this embodiment, reinforcing ribs 214 are provided on both the side of the first elongated member 110 facing the filter element and the side of the second elongated member 120 facing the filter element. Through the above structure, the reinforcing ribs 214 can enhance the strength of the first elongated member 110 and the second elongated member 120, make the product more solid, and extend the service life of the product.

Claims

1. A filter element frame, used to connect to a filter element, characterized in that: include: A first frame (100), the first frame (100) being connected to the upper surface of the filter element; A second frame (200), the second frame (200) being used to be connected to the lower surface of the filter element; A support assembly (300), wherein the upper end of the support assembly (300) is connected to the first frame (100), and the lower end of the support assembly (300) is connected to the second frame (200); Wherein, each of the first frame (100) and the second frame (200) comprises four slender members, the four slender members are connected head to tail in sequence, and two adjacent slender members are rotatably connected so that the filter element frame can rotate between an unfolded position and a folded position.

2. The filter element frame according to claim 1, characterized in that: The first frame (100) and the second frame (200) are both provided with insertion slots (102), and the upper and lower ends of the support assembly (300) are respectively inserted into the insertion slots (102).

3. The filter element frame according to claim 1, characterized in that: The support assembly (300) comprises a plurality of support rods (310), wherein the support rods (310) are arranged at intervals on the outside of the first frame (100) and the outside of the second frame (200).

4. The filter element frame according to claim 1, characterized in that: The four slender members include two first slender members (110) and two second slender members (120), wherein the first end of the first slender member (110) is rotatably connected to the first end of the second slender member (120), and the second end of the first slender member (110) is rotatably connected to the second end of the second slender member (120).

5. The filter element frame according to claim 4, characterized in that: A rotating shaft (111) is provided at the first end of the first slender member (110), and a rotating shaft hole (121) is provided at the first end of the second slender member (120). The rotating shaft (111) is rotatably inserted into the rotating shaft hole (121).

6. The filter element frame according to claim 5, characterized in that: A limiting portion (112) is provided at the end of the rotating shaft (111), and the limiting portion (112) abuts against the edge of the side wall of the rotating shaft hole (121).

7. The filter element frame according to claim 6, characterized in that: A first guiding inclined surface (113) is provided on a side of the limiting portion (112) away from the rotating shaft (111); a second guiding inclined surface (122) is provided on an end of a side wall of the rotating shaft hole (121) away from the limiting portion (112); a deformation groove (123) penetrating through the side wall of the rotating shaft hole (121) is provided on a first end of the second slender member (120); and the deformation groove (123) is connected to the rotating shaft hole (121).

8. The filter element frame according to claim 4, characterized in that: It also includes a foldable connecting piece (400), one end of the connecting piece (400) is connected to the second end of the first slender member (110), and the other end of the connecting piece (400) is connected to the second end of the second slender member (120).

9. The filter element frame according to claim 4, characterized in that: The first slender member (110) is provided with a first locking member (114), and the second slender member (120) is provided with a second locking member (124). When the filter element frame is in a folded position, the first locking member (114) is connected to the second locking member (124).

10. The filter element frame according to claim 4, characterized in that: A third locking piece (115) is provided at the first end of the first slender member (110), and a fourth locking piece (125) is provided at the first end of the second slender member (120). When the filter element frame is in the expanded position, the third locking piece (115) is connected to the fourth locking piece (125).

Images