Filtering device and buckle plug-in used for assembling filtering device

Abstract

The present invention provides a filtration device, comprising: a housing comprising a first half housing having an opening formed thereon and an accommodating cavity formed therein, the first half housing having a first side wall and a second side wall opposite to each other; the filter element is mounted in the accommodating cavity of the first half shell; and the buckle plug-in is mounted above the filter element and is connected with the first side wall and the second side wall of the first half shell in a buckling manner. In addition, the invention further provides a buckle plug-in used for assembling the filtering device, the buckle plug-in comprises a middle abutting section, a first positioning end and a second positioning end, the first positioning end and the second positioning end are connected to the two ends of the middle abutting section, the first positioning end is provided with a first buckle, and the second positioning end is provided with a second buckle. According to the technical scheme, the mounting stability of the filter element is improved, the filtering effect of the filtering device is guaranteed, and the problem that air inlet noise of the filtering device is increased due to looseness of the filter element is solved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile air filtration, and in particular to a filter device and a buckle plug-in unit used for assembling the filter device. Background Art

[0002] The filtering device used in automobile air conditioners is generally composed of an air filter assembly, an air filter inlet pipe assembly, an air filter outlet pipe assembly, and a crankcase ventilation pipe. Among them, by installing a filter element in the air filter assembly, the dust, pollen and other particles in the air are filtered and intercepted. For example, patent 202121026241.5 provides an automobile air filter system, in which the filter assembly includes a housing and a filter element, wherein the housing is a filter upper housing and a filter lower housing that are butt-jointed and fastened to each other (i.e., two butt-jointed half-shells), and the filter element is arranged between the filter upper housing and the filter lower housing.

[0003] The filter element and the housing of this type of filter assembly are generally installed by matching the size. However, after these existing filter elements are installed in the corresponding housing, the filter assembly formed is mostly installed in the car in an inverted form. During the long-term operation of the car, due to various vibrations or bumps, the filter element is very likely to become loose, gradually fall down, and shift, thereby affecting the filtering effect of the filter element and increasing the intake noise. In this regard, it is necessary to provide a new structure so that the filter element can maintain good stability even in an inverted installation environment. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a filter device and a snap-on plug-in unit for assembling the filter device.

[0005] In one aspect, the present invention discloses a filtering device, comprising:

[0006] A housing, comprising a first half housing, the first half housing having an opening formed thereon and a receiving cavity formed therein, the first half housing having first and second opposite side walls;

[0007] a filter element installed in the receiving cavity of the first half shell; and

[0008] A snap-fit ​​plug-in is installed above the filter element and is connected to the first side wall and the second side wall of the first half shell body by snap-fitting.

[0009] According to the filtering device of a preferred embodiment of the present invention, a first convex edge is protruded outward at the opening edge of the first side wall of the first half shell, and a second convex edge is protruded outward at the opening edge of the second side wall of the first half shell; the snap-on plug-in includes a middle pressing section and a first positioning end and a second positioning end connected to the two ends of the middle pressing section, the first positioning end has a first snap, and the second positioning end has a second snap; wherein, the first snap is snap-connected with the first convex edge of the first side wall of the first half shell, and the second snap is snap-connected with the second convex edge of the second side wall of the first half shell, and the middle pressing section of the snap-on plug-in is in contact with the upper surface of the filter element.

[0010] According to the filtering device of a preferred embodiment of the present invention, the first flange of the first half shell includes an upper edge portion extending horizontally outward from the opening edge of the first side wall and a side edge portion extending downward from the upper edge portion; the first buckle of the buckle plug-in is in a semi-enclosed shape, and an upwardly bent barb is provided at the end of the first buckle; when installed, the barb at the end of the first buckle is hooked into the inner side of the side edge portion of the first flange.

[0011] According to the filtering device of a preferred embodiment of the present invention, an inwardly concave slot is formed on the second convex edge of the first half shell; the second buckle of the buckle plug-in is in a semi-enclosed shape, and a protrusion is formed on the inner side surface of the second buckle; during installation, the protrusion of the second buckle is inserted into the slot of the second convex edge.

[0012] According to the filtering device of the preferred embodiment of the present invention, the middle pressing section of the buckle plug-in is a hollow structure.

[0013] According to the filtering device of a preferred embodiment of the present invention, the filter element includes a pleated filter material and a side strip connected to the outer periphery of the pleated filter material, the hardness of the side strip is higher than the hardness of the pleated filter material, and the height of the side strip exceeds the height of the pleated filter material; the middle pressing section of the snap-on plug-in is formed with a first bent portion at a position connected to the first positioning end, and the middle pressing section is formed with a second bent portion at a position connected to the second positioning end; during installation, the first bent portion and the second bent portion of the snap-on plug-in are pressed against the side strip of the filter element.

[0014] According to the filtering device of the preferred embodiment of the present invention, a positioning portion protruding upward is formed on the second convex edge of the first half shell; a positioning frame is formed on the second positioning end of the snap plug; during installation, the positioning portion is snapped into the positioning frame and abuts against the edge of the positioning frame.

[0015] On the other hand, the present invention discloses a snap-on plug-in for assembling a filter device, wherein the snap-on plug-in includes a middle pressing section for abutting against a filter element and a first positioning end and a second positioning end connected to both ends of the middle pressing section, the first positioning end having a first snap-on that can be snap-connected to a first side wall of a half-shell in a shell of the filter device, and the second positioning end having a second snap-on that can be snap-connected to a second side wall of the half-shell in the shell of the filter device.

[0016] According to the buckle plug-in for assembling a filter device of the present invention, the first buckle of the buckle plug-in is in a semi-enclosed shape, and an upwardly bent barb is provided at the end of the first buckle.

[0017] According to the buckle plug-in for assembling a filter device of the present invention, the second buckle of the buckle plug-in is in a semi-enclosed shape, and a bump is formed on the inner side surface of the second buckle.

[0018] According to the snap-on plug-in for assembling a filter device of the present invention, the middle pressing section of the snap-on plug-in is a hollow structure.

[0019] According to the snap-on plug-in for assembling a filter device of the present invention, the middle pressing section of the snap-on plug-in forms a first bending portion at the position connected to the first positioning end, and the middle pressing section forms a second bending portion at the position connected to the second positioning end.

[0020] According to the snap-fit ​​plug-in for assembling a filter device of the present invention, a positioning frame is formed at the second positioning end of the snap-fit ​​plug-in.

[0021] Compared with the prior art, the present invention has at least the following beneficial effects:

[0022] The present invention provides a filter device and a special structure of a snap-on plug-in for the filter device, and utilizes the convex structure of the first half shell in the shell so that the first and second positioning ends on the snap-on plug-in are mutually engaged and connected with the first and second convex edges of the first half shell to achieve fixation; the filter element is pressed against the filter element by the middle pressing section on the snap-on plug-in, so that the filter element can be stably installed in the shell. Even when the filter device is in an inverted installation operating environment, or when subjected to various vibrations or bumps, the filter element will not fall out or become loose due to the contact of the snap-on plug-in, thereby improving the installation stability of the filter element, ensuring the filtering effect of the filter device, and avoiding the problem of increased intake noise of the filter device due to loose filter element after long-term operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the first half shell of the shell in the filtering device of the present invention;

[0024] Figure 2It is a three-dimensional structural schematic diagram of the assembly of the filter element and the first half shell of the shell in the filter device of the present invention;

[0025] Figure 3 A top view of a snap-on plug-in assembly for a filter device according to the present invention;

[0026] Figure 4 A side view of a snap-on plug-in assembly for a filter device according to the present invention;

[0027] Figure 5 It is a schematic diagram of the three-dimensional structure of the first positioning end of the buckle plug-in and the first half shell in the assembled state of the present invention;

[0028] Figure 6 It is a schematic diagram of the three-dimensional structure of the second positioning end of the buckle plug-in and the first half shell in the assembled state of the present invention;

[0029] Figure 7 It is a schematic three-dimensional structure diagram of the second positioning end of the buckle plug-in and the first half shell in another angle in the assembled state of the present invention.

[0030] The accompanying drawings are marked as follows:

[0031] 1. first half shell; 11. first flange; 111. upper edge; 112. side edge;

[0032] 12. second convex edge; 121. slot; 13. positioning portion; 2. filter element;

[0033] 21. Folded filter material; 22. Side strip; 3. Buckle plug-in; 31. Middle pressure section;

[0034] 311, pressing strip; 312, horizontal strip; 32, first positioning end; 321, first buckle;

[0035] 33. second positioning end; 331. second buckle; 3311. protrusion; 34. first bending portion;

[0036] 35. Positioning frame; 36. Second bending portion. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] The specific embodiment of the present invention discloses a filter device and a snap-on plug-in unit for assembling the filter device.

[0039] The filtering device of the present invention comprises: a housing, a filter element 2 placed inside the housing, and a snap-on plug-in 3. The housing generally comprises a first half housing 1 and a second half housing that are butt-jointed and snap-fitted with each other.

[0040] In the present invention, the first half shell 1 and the second half shell of the shell can be the filter upper shell and the filter lower shell in the filter device respectively. Figure 1 , Figure 2 As shown, the filter element 2 can be placed in one half of the housing, such as in the first half of the housing 1. As a preferred embodiment, in the present invention, Figure 1 , Figure 2 In the figure, the filter lower housing is used as the first half housing 1, and the filter upper housing not shown in the drawings is used as the second half housing.

[0041] However, those skilled in the art will appreciate that the first half shell 1 described in the present invention may also be a filter upper shell, and the corresponding second half shell is a filter lower shell. Such an arrangement substantially has the same structure and function.

[0042] The present invention Figure 1 , Figure 2 The first half shell 1 shown in FIG. 1 is formed with an opening at the top and a receiving cavity for installing and receiving the filter element 2 is formed in the first half shell 1. The first half shell 1 has a first side wall and a second side wall opposite to each other.

[0043] like Figure 2 As shown, the filter element 2 is installed in the receiving cavity of the first half shell 1. The buckle plug-in 3 is installed above the filter element 2 and connected to the first side wall and the second side wall opposite to the first half shell 1 by buckle.

[0044] Preferably, a first flange 11 is formed at the opening edge of the first side wall of the first half shell 1, and the first flange 11 includes an upper edge portion 111 extending outwardly from the opening edge of the first side wall substantially horizontally, and a side edge portion 112 extending downwardly from the upper edge portion 111. A second flange 12 is formed at the opening edge of the second side wall of the first half shell 1, and protrudes outwardly.

[0045] like Figure 3 , Figure 4 As shown, the buckle plug-in 3 is generally in the shape of a long strip, and includes a middle pressing section 31 and a first positioning end 32 and a second positioning end 33 connected to both ends of the middle pressing section 31. During installation, the middle pressing section 31 can abut against the upper surface of the filter element 2, and the first positioning end 32 and the second positioning end 33 can be respectively engaged with the first flange 11 of the first side wall of the first half shell 1 and the second flange 12 of the second side wall by respectively providing a first buckle 321 and a second buckle 331 adapted thereto.

[0046] By adopting the above structural design of the snap-fit ​​plug-in 3 and utilizing the structures of the first convex edge 11 and the second convex edge 12 on the opposite side walls of the first half shell 1, the snap-fit ​​plug-in 3 is matched and snap-fitted with the opposite first and second side walls of the first half shell 1. Thus, the snap-fit ​​plug-in 3 can be fixedly connected with the first half shell 1, so that the filter element 2 is firmly installed in the shell by the snap-fit ​​plug-in 3 pressing against the surface of the filter element 2.

[0047] After the filter element is installed, even when the housing is inverted, the filter element 2 will not be separated from the original installation position, thus avoiding the problem of the filter element loosening and gradually falling down in the prior art. Therefore, according to the technical solution of the present invention, the stability of the filter element installation is improved, thereby ensuring the filtering effect of the filter element, and also avoiding the problem of increased intake noise of the filter device caused by loose filter element after long-term operation.

[0048] In a further specific embodiment, Figure 3-Figure 6 As shown, a first buckle 321 in a semi-enclosed shape (i.e., a polygonal shape with three closed sides and one open side) is provided in the first positioning end 32 of the buckle plug-in 3, and a barb bent upward is provided at the end of the first buckle 321; a second buckle 331 in a semi-enclosed shape is also provided in the second positioning end 33 of the buckle plug-in 3. The semi-enclosed shapes of the first buckle 321 and the second buckle 331 can be different, for example, the semi-enclosed shape of the first buckle 321 can be open in a direction toward the bottom of the buckle plug-in 3, and the semi-enclosed shape of the second buckle 331 can be open in a direction toward the inside of the buckle plug-in 3.

[0049] By adopting the above structure, when installing the filter element, since the end of the first buckle 321 has a barb, the first buckle 321 side is installed first, and then the second buckle 331 side is installed. Figure 5 As shown, the first buckle 321 is first hooked into the inner side of the first flange 11 of the first half shell 1, that is, the barb at the end of the first buckle 321 is hooked into the inner side of the side edge 112 of the first flange 11; then the second buckle 331 is engaged with the second flange 12 of the first half shell 1. When disassembling, the tail of the second buckle 331 can be held to separate the second buckle 331 from the second flange 12, and then the first buckle 321 can be disassembled from the first flange 11. Therefore, the disassembly and assembly of the buckle plug-in 3 is very convenient.

[0050] As a preferred embodiment, a concave slot 121 is formed on the second flange 12 of the first half shell 1, and a protrusion 3311 is correspondingly formed on the inner side of the second buckle 331. When the second buckle 331 is engaged with the second flange 12 of the first half shell 1, the protrusion 3311 on the second buckle 331 is inserted into the slot 121 of the second flange 12, thereby achieving a more stable installation and fixation. When disassembling, the rear of the second buckle 331 can also be held to disengage the protrusion 3311 from the slot 121 of the second flange 12, and then the first buckle 321 can be disassembled from the first flange 11, and the disassembly process is also very convenient.

[0051] In a further preferred embodiment of the present invention, the middle pressing section 31 of the buckle plug-in 3 is a hollow structure. Figure 3 As shown, the middle pressing section 31 includes two pressing strips 311 arranged in parallel and at least one horizontal strip 312 connecting the two pressing strips 311. By adopting the hollow-out buckle plug-in 3, it is possible to ensure the buckle plug-in 3 has abutting and fixing effect on the filter element 2, and also to make the buckle plug-in 3 have good air permeability, reduce the loss of the filtering area of ​​the filter element 2 and reduce the filtering resistance, ensure good filtering efficiency, and also facilitate lightweighting, which can reduce the load on the housing.

[0052] In addition, in a further preferred embodiment of the present invention, Figure 2 , Figure 7 As shown, the filter element 2 includes a pleated filter material 21 and a side strip 22 connected to the periphery of the pleated filter material 21. The pleated filter material 21 plays a filtering role, and the side strip 22 has a higher hardness than the pleated filter material 21, which plays a role in strengthening the structural strength of the filter element 2. Moreover, the height of the side strip 22 can be designed to be slightly higher than the height of the pleated filter material 21. In the buckle plug-in 3, as shown in FIG. Figure 4 As shown, the middle pressing section 31 is formed with a first bent portion 34 at the position connected to the first positioning end 32, and the middle pressing section 31 is formed with a second bent portion 36 at the position connected to the second positioning end 33. Therefore, when the buckle plug-in 3 is installed on the first half shell 1, the buckle plug-in 3 can be pressed against the side strip 22 of the filter element 2 through the first bent portion 34 and the second bent portion 36 of the middle pressing section 31. In this way, the filter element 2 can be fixed by pressing the side strip 22 with the first bent portion 34 and the second bent portion 36, thereby improving the overall strength and stability of the filter element 2, and effectively improving the problem of deformation of the folded filter material 21 of the filter element 2 due to long-term stress.

[0053] In addition, in a further preferred embodiment of the present invention, Figure 7As shown, a positioning portion 13 protruding upward is formed on the second flange 12 of the first half shell 1. A positioning frame 35 is formed on the second positioning end 33 of the buckle plug-in 3, and the positioning frame 35 can be specifically composed of the edge of the second positioning end 33 and two pressing strips 311. When the second buckle 331 of the buckle plug-in 3 is installed on the second flange 12 of the first half shell 1, the positioning portion 13 is aligned and inserted into the positioning frame 35 and the positioning portion 13 is abutted against the edge of the positioning frame 35, so that the positioning frame 35 and the positioning portion 13 are mutually constrained and positioned. By adopting the above design structure, the second positioning end 33 can be positioned on the first half shell 1 without moving, thereby giving a positioning restriction to the lateral position of the buckle plug-in 3 on the first half shell 1, thereby realizing the relative position locking of the buckle plug-in 3, the filter element 2 and the shell, and further improving the overall positioning stability.

[0054] The technical solution provided by the present invention is described in detail above, and specific embodiments are used herein to illustrate the principle and implementation of the present invention. The specific description of the above embodiments is only used to help understand the technical solution and technical concept of the present invention. At the same time, for those of ordinary skill in the art, according to the technical solution and technical concept of the present invention, there may be corresponding modifications and substitutions in the specific implementation and scope of application, and these modifications and substitutions should still fall within the scope of protection of the present invention. The contents of the present invention specification should not be understood as limiting the present invention.

Claims

1. A filtering device, characterized in that: include: A housing, comprising a first half housing (1), the first half housing (1) having an opening formed on its upper side and a receiving cavity formed inside the first half housing (1), the first half housing (1) having a first side wall and a second side wall opposite to each other; A filter element (2) installed in the receiving cavity of the first half shell (1); as well as A snap-fit ​​plug-in unit (3) is installed above the filter element (2) and is connected to the first side wall and the second side wall of the first half shell (1) by snap-fitting.

2. The filtering device according to claim 1, characterized in that: A first convex edge (11) is formed at an opening edge of the first side wall of the first half shell (1) and protrudes outward, and a second convex edge (12) is formed at an opening edge of the second side wall of the first half shell (1) and protrudes outward; The buckle plug-in (3) comprises a middle pressing section (31) and a first positioning end (32) and a second positioning end (33) connected to two ends of the middle pressing section (31); the first positioning end (32) has a first buckle (321), and the second positioning end (33) has a second buckle (331); The first buckle (321) is snap-connected with the first convex edge (11) of the first side wall of the first half shell (1), the second buckle (331) is snap-connected with the second convex edge (12) of the second side wall of the first half shell (1), and the middle pressing section (31) of the buckle plug-in (3) is in contact with the upper surface of the filter element (2).

3. The filtering device according to claim 2, characterized in that: The first flange (11) of the first half shell (1) comprises an upper edge portion (111) extending horizontally outward from the opening edge of the first side wall and a side edge portion (112) extending downward from the upper edge portion (111); the first buckle (321) of the buckle plug-in (3) is in a semi-enclosed shape, and an upwardly bent barb is provided at the end of the first buckle (321); when installed, the barb at the end of the first buckle (321) is hooked into the inner side of the side edge portion (112) of the first flange (11).

4. The filtering device according to claim 3, characterized in that: A concave slot (121) is formed on the second convex edge (12) of the first half shell (1); the second buckle (331) of the buckle plug-in (3) is in a semi-enclosed shape, and a protrusion (3311) is formed on the inner side surface of the second buckle (331); during installation, the protrusion (3311) of the second buckle (331) is inserted into the slot (121) of the second convex edge (12).

5. The filtering device according to claim 2, characterized in that: The middle pressing section (31) of the buckle plug-in unit (3) is a hollow structure.

6. The filtering device according to claim 2, characterized in that: The filter element (2) comprises a folded filter material (21) and a side strip (22) connected to the periphery of the folded filter material (21); the hardness of the side strip (22) is higher than that of the folded filter material (21), and the height of the side strip (22) exceeds the height of the folded filter material (21); a first bent portion (34) is formed at a portion of the middle pressing section (31) of the snap-fit ​​plug-in (3) connected to a first positioning end (32), and a second bent portion (36) is formed at a portion of the middle pressing section (31) connected to a second positioning end (33); during installation, the first bent portion (34) and the second bent portion (36) of the snap-fit ​​plug-in (3) are pressed against the side strip (22) of the filter element (2).

7. The filtering device according to claim 2, characterized in that: A positioning portion (13) protruding upward is formed on the second convex edge (12) of the first half shell (1); a positioning frame (35) is formed on the second positioning end (33) of the snap plug-in (3); during installation, the positioning portion (13) is snapped into the positioning frame (35) and abuts against the edge of the positioning frame (35).

8. A snap-on plug-in for assembling a filter device, characterized in that: The buckle plug-in (3) comprises a middle pressing section (31) for abutting against a filter element, and a first positioning end (32) and a second positioning end (33) connected to two ends of the middle pressing section (31); the first positioning end (32) has a first buckle (321) capable of being snap-connected with a first side wall of a half shell in a shell of the filter device, and the second positioning end (33) has a second buckle (331) capable of being snap-connected with a second side wall of a half shell in the shell of the filter device.

9. The snap-fit ​​plug-in assembly for filter device assembly according to claim 8, characterized in that: The first buckle (321) of the buckle plug-in unit (3) is in a semi-enclosed shape, and an upwardly bent barb is provided at the end of the first buckle (321).

10. The snap-fit ​​plug-in assembly for filter device assembly according to claim 9, characterized in that: The second buckle (331) of the buckle plug-in unit (3) is in a semi-enclosed shape, and a protrusion (3311) is formed on the inner side surface of the second buckle (331).

11. The snap-fit ​​plug-in assembly for filter device assembly according to claim 8, characterized in that: The middle pressing section (31) of the buckle plug-in unit (3) is a hollow structure.

12. The snap-fit ​​plug-in assembly for filter device assembly according to claim 8, characterized in that: The middle pressing section (31) of the buckle plug-in unit (3) is formed with a first bent portion (34) at a position connected to the first positioning end (32), and the middle pressing section (31) is formed with a second bent portion (36) at a position connected to the second positioning end (33).

13. The snap-fit ​​plug-in assembly for filter device assembly according to claim 8, characterized in that: A positioning frame (35) is formed at the second positioning end (33) of the buckle plug-in unit (3).

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