Filter element assembly and air filter

Abstract

The utility model belongs to the field of air inlet systems, and particularly relates to a filter element assembly and an air filter. Comprising a first mounting end cover and a second mounting end cover which are used for mounting the filter element in a shell and are respectively combined with an open end and a closed end of the shell, and a slot for inserting the edge of the open end and a fixing slot for fixing one end of the filter element are formed in one side, facing the filter element, of the first mounting end cover; a mounting groove for fixing the other end of the filter element is formed in one side, facing the filter element, of the second mounting end cover, and a fastening part is arranged between the second mounting end cover and the closed end. The mounting frame is provided with the first mounting end cover and the second mounting end cover which are used for fixing the filter element between the first mounting end cover and the second mounting end cover, the fastening part is arranged between the second mounting end cover and the closed end of the shell, and the shell and the mounting frame are connected through the fastening part; and the filter element assembly can be disassembled by only releasing the connection between the shell and the second mounting end cover, so that the operation is very convenient and rapid.

Description

Technical Field

[0001] The utility model belongs to the field of air intake systems, and in particular relates to a filter element component and an air filter. Background Art

[0002] The air filter (also called air cleaner) is part of the air intake system of cars, ATVs, motorcycles, etc. Its main function is to filter out impurities or dust in the air and allow clean air to enter the engine cylinder. The air filter usually uses a filter element installed in the housing to filter the inhaled air, and then provides the filtered relatively clean air to the engine.

[0003] An air filter usually consists of two parts: a main body and a cover body. The filter element is installed in the cover body or inside the main body, and then the cover body is combined with the main body to realize the assembly of the entire device. In order to allow the filter element to filter out more dust and impurities before replacement, most filter elements are installed in a replaceable manner. When disassembling and replacing, it is necessary to disassemble the outer shell, mounting structure and filter element in turn. The existing air filter element mounting structure is complex, easy to deform, and the assembly and fixation are cumbersome. Utility Model Content

[0004] The utility model is developed to solve the above problems, and aims to provide a filter element assembly and an air filter with a simple filter element installation structure and convenient assembly and disassembly.

[0005] The utility model provides a filter element assembly, which is used to be installed on the shell of an air filter and has the following characteristics: a filter element, a mounting frame, which is used to mount the filter element in the shell and has a first mounting end cover and a second mounting end cover respectively combined with the open end and the closed end of the shell, wherein the first mounting end cover has a slot for inserting the edge of the open end and a fixing slot for fixing one end of the filter element on the side facing the filter element, and the second mounting end cover has a mounting slot for fixing the other end of the filter element on the side facing the filter element, and a fastening component is arranged between the second mounting end cover and the closed end.

[0006] The filter element assembly provided by the present invention may also have the following feature: a fixing plate is provided on the side of the second mounting end cover facing away from the filter element, and the closed end is connected to the fixing plate via the fastening component.

[0007] The filter element assembly provided by the utility model may also have the following features: the fastening component comprises: a nut fixed on the fixing plate, a bolt passing through the closed end in sequence and being threadedly connected to the fixing plate on the nut, and the outer shell is pushed toward the side where the first mounting end cover is located by rotating the bolt to fasten the edge of the open end in the slot.

[0008] In the filter element assembly provided by the present utility model, it may further have the following features: The filter element is annular, having an outer ring and an inner ring. An air inlet cavity communicating with the main air inlet on the housing is formed between the outer ring and the inner wall of the housing, and the inner ring forms an inner cavity through which the gas filtered by the filter element flows.

[0009] In the filter element assembly provided by the present utility model, it may further have the following features: The mounting bracket further has a connecting column extending from the middle of the first mounting end cover to the middle of the second mounting end cover. The connecting column is located in the inner cavity and extends along the axial direction of the filter element. One end is integrally provided with the first mounting end cover, and the other end is detachably connected to the second mounting end cover. A plurality of air vents communicating with one end of the inner cavity are provided on the first mounting end cover, and the second mounting end cover closes the other end of the inner cavity.

[0010] In the filter element assembly provided by the present utility model, it may further have the following features: The cross-section of the first mounting end cover is an ellipse arranged obliquely.

[0011] In the filter element assembly provided by the present utility model, it may further have the following features: The second mounting end cover has:

[0012] A filter element mounting portion, on the side facing the filter element, is provided with the mounting groove.

[0013] A fixing portion, which is integrally formed with the filter element mounting portion and protrudes towards the connecting column to form a mounting platform, and is fixed to the connecting column through a fixing member.

[0014] In the filter element assembly provided by the present utility model, it may further have the following features: It further includes a bracket for supporting the filter element. The bracket is sleeved on the inner surface or / and the outer surface of the filter element and is fixed to the filter element as a whole through a foaming portion.

[0015] The present utility model also proposes an air filter, which has the following features, at least including: a housing, and a filter element assembly mounted on the housing, and the filter element assembly is the filter element assembly as described above.

[0016] In the air filter provided by the present utility model, it may further have the following features: The side of the first mounting end cover facing away from the filter element is combined with the box body.

[0017] The prominent and beneficial technical effects of the present utility model compared with the prior art are:

[0018] The filter element assembly of the present utility model is installed on the housing, including a filter element and a mounting frame. The mounting frame is provided with a first mounting end cover and a second mounting end cover for fixing the filter element between the two. The first mounting end cover contains a slot for inserting the open end of the housing. A fastening component is provided between the second mounting end cover and the closed end of the housing, and the connection between the housing and the mounting frame is realized through the fastening component. When disassembling, only the connection between the housing and the second mounting end cover needs to be released to disassemble the filter element assembly, which is very convenient and rapid. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. 6 is a schematic structural view of the front side perspective of the air filter of Embodiment 1 of the present utility model.

[0020] Figure 2 FIG. 10 is a schematic structural view of the rear side perspective of the air filter of Embodiment 1 of the present utility model.

[0021] Figure 3 FIG. 14 is a schematic structural view of the top view perspective of the air filter of Embodiment 1 of the present utility model.

[0022] Figure 4 FIG. Figure 3 is a sectional view taken along line A-A in FIG.

[0023] Figure 5 FIG. 24 is a schematic structural view of the housing of Embodiment 1 of the present utility model.

[0024] Figure 6 FIG. 28 is a schematic structural view of the rear side perspective of the mounting frame of the present utility model.

[0025] Figure 7 FIG. 32 is a schematic structural view of the front side perspective of the mounting frame of the present utility model.

[0026] Figure 8 FIG. 36 is a schematic structural view of the rear side perspective of the second mounting end cover of the present utility model.

[0027] Figure 9 FIG. 40 is a schematic structural view of the front side perspective of the second mounting end cover of the present utility model.

[0028] Figure 10 FIG. 44 is a schematic structural view of the front side perspective of the air filter of Embodiment 2 of the present utility model.

[0029] Figure 11 FIG. 48 is a schematic structural view of the housing of Embodiment 2 of the present utility model.

[0030] Figure 12 FIG. Figure 3 is a sectional view taken along line B-B in FIG.

[0031] Reference numerals: housing 1; shell 2; intake chamber 21; main intake port 22; outlet end cap 3; main outlet port 31; sealing ring 32; outer shell 4; open end 41; closed end 42; fastener 43; nut 431; bolt 432; filter element assembly 5; mounting bracket 51, filter element 52; inner cavity 521; bracket 53; second mounting end cap 54; filter element mounting portion 541; fixing portion 542; mounting groove 543; mounting platform 544; fixing piece 55; through hole 552; first mounting end cap 56; slot 561; fixing groove 562; spoke 563; vent port 564; connecting column 57; reinforcing spoke 571; visual window 6; positioning and reinforcing portion 61; oil and gas separation portion 7; outer connecting pipe 71; inner connecting pipe 72; discharge pipe 73. Detailed implementation manners

[0032] In order to make the technical means, creative features, achieved purposes and functions realized by the present utility model easy to understand, the following embodiments will specifically elaborate on the technical solutions of the air filter of the present utility model in conjunction with the accompanying drawings.

[0033] It should be noted that the structures, ratios, sizes, etc. shown in the attached drawings of the embodiments of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limited conditions under which the present utility model can be implemented. Therefore, they do not have any substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the functions that the present utility model can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed by the present utility model. At the same time, the terms such as "inner", "outer", "middle part" and "one" cited in the embodiments of this specification are only for the convenience of description and are not used to limit the scope within which the present utility model can be implemented. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope within which the present utility model can be implemented.

[0034] It should also be noted that when an element is referred to as being "fixed", "arranged" or "connected" to another element, it can be directly on the other element or there may be an intermediate element at the same time.

[0035] <Embodiment 1>

[0036] This embodiment proposes an air filter that can be applied to automobiles, motorcycles or all-terrain vehicles. As Figures 1 - 5As shown, the air filter includes a box body 1 and a shell 2, the shell 2 is mounted on the box body 1, an air outlet cavity 11 is formed in the box body 1, the air outlet cavity 11 is L-shaped and has two openings, one of which is mounted with the shell 2, and the other is mounted with an air outlet end cover 3, a main air outlet 31 leading to the air outlet cavity 11 is provided on the air outlet end cover 3, and the air intake pipe of the engine is installed on the main air outlet 31. An air intake cavity 21 is formed in the shell body 2, and a main air intake 22 leading to the air intake cavity 21 is provided, and the gas enters the air intake cavity 21 from the main air intake 22, and then flows out from the main air outlet 31 to the engine air intake pipe through the air outlet cavity 11.

[0037] Specifically, Figure 3 and Figure 4 As shown, the housing 2 has a housing 4 and a filter element assembly 5. Figure 5 As shown, the shell 4 as a whole is a cylindrical structure with one end open and the other end closed, the opening is regarded as the open end 41, and the closed end is regarded as the closed end 42. The main air inlet 22 is also opened on the circumferential surface of the shell 4, and the filter element assembly 5 is installed on the shell 4.

[0038] like Figure 4 As shown, the filter element assembly 5 includes a mounting frame 51, a filter element 52 and a bracket 53. The mounting frame 51 is used to mount the filter element 52 in the housing 4, and to mount the housing 4 with the filter element 52 on the box body 1. Figure 4 and Figures 6 - 9 As shown, the mounting frame 51 has a first mounting end cover 56 and a second mounting end cover 54, one side of the first mounting end cover 56 (the side facing the housing 1 or can also be called the side away from the filter element 52) ​​is combined with the edge of the housing 1, and the other side (the side facing the filter element 52 or can also be called the side away from the housing 1) is combined with the open end 41 and the filter element 42, and is formed with a slot 561 for inserting the edge of the open end 41 of the housing 4 and a fixing groove 562 for fixing one end of the filter element 52; the second mounting end cover 54 has a mounting groove 543 for fixing the other end of the filter element 52 on the side facing the filter element 52, and a fastening component 43 is provided between the second mounting end cover 54 and the closed end 42 of the housing 4.

[0039] The filter element 52 is an annular cylindrical filter element, and the filter element 52 has an outer ring and an inner ring. Figure 4 As shown, an annular air inlet cavity 21 connected to the main air inlet 22 is formed between the outer ring and the inner wall of the housing 4, and an inner ring of the filter element 52 forms an inner cavity 521 connected to the air outlet cavity 11, as shown in FIG. Figure 4As shown by the arrow marked in the figure, the gas entering through the independent air inlet 22 enters the air inlet cavity 21, then enters the inner cavity 521 after being filtered by the filter element 52, and then flows out from the air outlet cavity 11, completing the entire air intake and filtration process. In addition, the opening direction of the main air inlet 22 is preferably the direction in which the air flow is tangent to the outer circumference of the filter element, which is convenient for the gas to enter the filter element 52 for filtration.

[0040] In addition, the mounting bracket 51 also has a connecting column 57 extending from the middle of the first mounting end cover 56 to the middle of the second mounting end cover 54. The connecting column 57 is located in the inner cavity 521 and extends along the axial direction of the filter element 52. One end of the connecting column 57 is integrally connected to the first mounting end cover 56, and the other end is detachably connected to the second mounting end cover 54 through a fixing member 545. In this embodiment, the connecting column 57 is a tapered columnar structure extending from the first mounting end cover 56 to the second mounting end cover 54, and there are several triangular reinforcing spokes 571 on the outer peripheral surface of the connecting column 57. The first mounting end cover 56 is an oval ring, and several spokes 563 are formed in the middle. The intersection point in the middle of the several spokes 563 is connected to the connecting column 57, and several air vents 564 communicating with one end of the inner cavity 521 are formed between the adjacent spokes 563.

[0041] As Figure 4 and Figure 8 shown, the second mounting end cover 54 closes the other end of the inner cavity 521, and the second mounting end cover 54 has a filter element mounting portion 541 and a fixing portion 542. The filter element mounting portion 541 is provided with the mounting groove 543 for the other end of the filter element 52 to be inserted on the side facing the filter element 52. The fixing portion 542 is integrally connected with the filter element mounting portion 541 and protrudes toward the connecting column 57 to form a mounting platform 544. The mounting platform 544 is fixed to the connecting column 57 through a fixing member 545. The fixing member 545 can be a bolt. A threaded hole is provided in the second mounting end cover 54, and a through hole is provided on the mounting platform 544. The fixing member 545 passes through the through hole and extends into the threaded hole, thereby fixing the second mounting end cover 54 on the connecting column 57, and at the same time enabling the filter element 52 to be firmly mounted on the mounting bracket 51. An accommodation space for the filter element 52 is formed between the first mounting end cover 56 and the second mounting end cover 54, and at the same time, it plays a role in positioning and fixing the front and rear ends of the filter element 52, and both ends present a wrapped connection structure, making the installation of the filter element 52 more stable.

[0042] The bracket 53 is arranged on the inner circle or / and outer circle of the filter element 52. The bracket 53 is used to support the filter element 52 and is installed between the first mounting end cover 56 and the second mounting end cover 54 together with the filter element 52. One end of the bracket 53 and the filter element 52 are made into a whole by PC foam material and inserted into the fixing groove 562 of the first mounting end cover 56, and the other end is inserted into the mounting groove 543 of the second mounting end cover 54.

[0043] As Figure 9 shown, a fixing piece 55 is welded to the side of the filter element mounting portion 541 of the second mounting end cover 54 away from the filter element 52. One end of the housing 4 away from the box body 1 (i.e., the closing end 42) is detachably connected to the fixing piece 55 through a fastening member 43. In this embodiment, as Figure 4 and Figure 9 shown, the fastening member 43 has a pair of nuts 431 and a bolt 432. A pair of nuts 431 are welded and fixed to the side of the fixing piece 55 facing the filter element mounting portion 541. The fixing piece 55 is provided with a through hole 552 corresponding to each nut 431, and through holes are also correspondingly provided on the closing end 42. The bolt 432 sequentially passes through the through holes on the closing end 42 and the fixing piece 55 and extends into the nut 431. During the process of tightening the bolt 432, the housing 4 can be pushed towards the side where the box body 1 is located, so that the edge of the opening end 41 of the housing 4 extends into and tightly fits in the slot 561, completing the installation of the housing 4, thereby fixing the filter element 52 in the housing 4 to form the housing 2. Since the housing and the first mounting end cover 46 adopt plug-in connection and no other bolt fixing structures need to be added, only the locking member needs to be disassembled during disassembly, which is very convenient and fast.

[0044] When replacing the filter element 52, first screw out the bolt 432, remove the housing 4, then screw out the fixing member 545, remove the second mounting end cover 54, and then the filter element 52 can be taken out together with the bracket 53. Then replace it with a new filter element 52, and then install the second mounting end cover 54 and the housing 4 in sequence. The disassembly and assembly are very convenient.

[0045] In this embodiment, as Figure 4 shown, the first mounting end cover 56 and the box body 1 are fixed by welding, and the cross-section of the connection part between the two is an ellipse arranged obliquely, which can increase the air outlet area and improve the air intake volume and air intake efficiency of the engine.

[0046] During disassembly, since the first mounting end cover 56 and the box body 1 are fixed by welding, the first mounting end cover 56 and the box body 1 always remain connected. Only the housing and the second mounting end cover 54 need to be removed in sequence to replace the filter element 52. Not only are the disassembly steps simple and the disassembly is rapid, but also the airtightness between the first mounting end cover 56 and the box body 1 can be guaranteed.

[0047] <Embodiment 2>

[0048] On the basis of the above Embodiment 1, in this embodiment, as Figure 10 and Figure 11As shown in the figure, a visible window 6 is integrally formed on the outer shell 4. The visible window 6 is located on the outer shell and is used to observe the filter element assembly 5 inside the outer shell 4. There are two visible windows 6, which are symmetrically arranged on the front and back sides of the outer shell 4 (one visible window 6 can also be set on the front side of the outer shell 4 for the convenience of users to observe). During production and manufacturing, the visible window 6 is first formed by one-time injection molding with a transparent material, and then an opaque material is used for secondary injection molding to form the outer shell 4 on the outer periphery of the visible window 6, so that the outer shell 4 and the visible window 6 are integrated, with high overall strength and the visible window not easily falling off. At the same time, this injection molding method also has the characteristics of convenient production, simple structure, and low cost. In this embodiment, the visible window 6 is made of transparent PC material, and the outer shell 4 is made of opaque PC material.

[0049] As Figure 11 shown, the inner side of the visible window 6 has a positioning and strengthening portion 61 extending out of the edge of the visible window 6. The positioning and strengthening portion 61 abuts against the inner wall of the outer shell 4. On the one hand, the extended part is convenient for positioning during secondary injection molding. On the other hand, after the visible window is integrally formed with the outer shell after secondary injection molding, the extended part abuts against the inside of the outer shell to form a strengthening structure, enhancing the stability and firmness of the structure.

[0050] <Embodiment 3>

[0051] Based on the above Embodiment 1 and Embodiment 2, as Figure 2 shown, an air outlet end cover 3 is installed on the box body 1 away from the housing 2. The air outlet end cover 3 is provided with a main air outlet 31 communicating with the air outlet cavity. The air outlet end cover 3 is also provided with a sealing ring 32 surrounding the outer circle of the main air outlet. In this embodiment, since this air filter is used for a double-cylinder engine, there are two main air outlets 31, and these two main air outlets 31 are arranged side by side. The sealing ring 32 is in an "∞" shape and is directly fixed on the air outlet end cover 3, so that the air outlet end cover 3 can be directly connected to the throttle valve, eliminating the intermediate hose connection and increasing the airtightness.

[0052] As Figure 2 and Figure 12 shown, an oil and gas separation portion 7 communicating with the crankcase is also provided at the air outlet end of the air outlet end cover 3. One side of the oil and gas separation portion 7 is formed with an outer connecting pipe 71 for connecting to the crankcase, and the other side is formed with an inner connecting pipe 72 for communicating with the air outlet cavity 11. A discharge pipe 73 is also provided below the outer connecting pipe 71. A circlip and a plug are provided on the discharge pipe 73 for discharging the separated oil liquid. A sponge is provided inside the oil and gas separation portion 7 for oil and gas separation.

[0053] Technical effects of the embodiment

[0054] The filter element assembly of the above embodiment is installed on the housing, including a filter element and a mounting bracket. The mounting bracket is provided with a first mounting end cover and a second mounting end cover for fixing the filter element between the two. The first mounting end cover is provided with a slot for inserting the open end of the housing. A fastening member is arranged between the second mounting end cover and the closed end of the housing. The connection between the housing and the mounting bracket is realized through the fastening member. When disassembling, only the connection between the housing and the second mounting end cover needs to be released to disassemble the filter element assembly, which is very convenient and fast.

[0055] Further, the fastening member has a nut fixed on the fixing piece of the second mounting end cover and a bolt. The bolt sequentially passes through the closed end and is threadedly connected to the nut on the fixing piece. By rotating the bolt, the housing is pushed towards the side where the first mounting end cover is located, and the edge of the open end is fastened in the slot, so as to realize the fixation of the housing and the first mounting end cover. When disassembling, only the nut needs to be unscrewed to disengage it from the second mounting end cover, and then the disassembly of the housing can be realized to replace the filter element.

[0056] Further, the filter element is an annular filter element. An air inlet cavity communicating with the main air inlet is formed between the outer circle of the filter element and the inner wall of the housing. The inner circle of the filter element forms an inner cavity. Air enters the filter element from the air inlet cavity on the outer circle and then flows out to the air outlet cavity from the inner cavity inside the filter element. By adopting an annular filter element, the filtering area of the annular filter element can be maximized under the same volume, the air can be filtered to a greater extent, the filtering effect can be improved, and the impurities filtered out can be accommodated in a larger range, thus prolonging the service life of the filter element.

[0057] Further, the mounting bracket also has a connecting column extending from the middle of the first mounting end cover to the middle of the second mounting end cover. The connecting column is located in the inner cavity and extends along the axial direction of the filter element. One end is integrally arranged with the first mounting end cover, and the other end is detachably connected to the second mounting end cover. The filter element is arranged between the first mounting end cover and the second mounting end cover, forming a wrapped positioning and fixation on the front and rear ends of the filter element, making the installation of the filter element more reliable and stable. In addition, when replacing the filter element, only the second mounting end cover needs to be disassembled from the connecting column, and then the filter element can be taken out for replacement.

[0058] Further, the cross-section of the connection between the first mounting end of the mounting bracket of the filter element assembly and the box body is an elliptical shape arranged obliquely, which can increase the air outlet area, thereby improving the air intake volume and air intake efficiency of the engine.

[0059] The above embodiments are preferred cases of the present invention and are not used to limit the protection scope of the present invention. Any simple modification, equivalent change or modification made to the above embodiments based on the technical principle of the present invention still belongs to the scope of the technical solution of the present invention.

Claims

1. A filter element assembly for installation on the housing of an air filter, characterized in that, include: Filter element, The mounting frame is used to mount the filter element in the housing and has a first mounting end cap and a second mounting end cap respectively combined with the open end and the closed end of the housing, The first mounting end cap has a slot for inserting the edge of the opening end and a fixing groove for fixing one end of the filter element on the side facing the filter element. The side of the second mounting end cover facing the filter element comprises a mounting groove for fixing the other end of the filter element, and a fastening component is arranged between the second mounting end cover and the closed end.

2. The filter element assembly according to claim 1, wherein: A fixing plate is provided on the side of the second mounting end cover facing away from the filter element, and the closed end is connected to the fixing plate through the fastening component.

3. The filter element assembly according to claim 2, wherein: The fastening component has: A nut fixed on the fixing plate, The bolts are sequentially passed through the closed ends and the fixing pieces and are threadedly connected to the nuts. The outer shell is pushed toward the side where the first mounting end cover is located by rotating the bolt, so that the edge of the open end is fastened in the slot.

4. The filter element assembly according to any one of claims 1-3, characterized in that: The filter element is annular and has an outer ring and an inner ring. An air inlet cavity connected to a main air inlet on the outer shell is formed between the outer ring and the inner wall of the outer shell. The inner ring forms an inner cavity for the gas filtered by the filter element to flow through.

5. The filter element assembly according to claim 4, wherein, The mounting frame also has a connecting column extending from the middle of the first mounting end cover to the middle of the second mounting end cover, the connecting column is located in the inner cavity and extends along the axial direction of the filter element, one end is integrally arranged with the first mounting end cover, and the other end is detachably connected to the second mounting end cover, the first mounting end cover is provided with a plurality of vents connected to one end of the inner cavity, and the second mounting end cover closes the other end of the inner cavity.

6. The filter element assembly according to claim 5, characterized in that: The cross section of the first mounting end cover is an obliquely arranged ellipse.

7. The filter element assembly according to claim 5, characterized in that: The second mounting end cap has: The filter element installation portion has the installation groove on one side facing the filter element. The fixing part is connected with the filter element mounting part as a whole, protrudes toward the connecting column to form a mounting platform, and is fixed to the connecting column through a fixing piece.

8. The filter element assembly according to any one of claims 1-3, characterized in that: It also includes a bracket for supporting the filter element. The bracket is sleeved on the inner surface and / or the outer surface of the filter element and is fixed to the filter element as a whole through a foaming material.

9. An air filter, characterized in that, At least: The box body has an air outlet cavity and a main air outlet. A housing is mounted on the box body and has: shell, A filter element assembly is mounted on the housing. The filter element assembly is the filter element assembly as described in any one of claims 1-8.

10. The air filter according to claim 9, characterized in that, The first mounting end cover is combined with the housing at a side facing away from the filter element.

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