Air filter with inner supporting structure

Abstract

The utility model belongs to the technical field of vehicle air inlet systems, and particularly relates to an air filter with an inner supporting structure. The shell is provided with an upper shell body and a lower shell body, and the upper shell body and the lower shell body form an inner cavity; the filter element is mounted in the inner cavity, and at least one mounting hole is formed in the middle of the filter element; the inner supporting structures penetrate through the corresponding mounting holes and then are connected with the upper shell and the lower shell; wherein the inner supporting structure comprises an upper supporting part arranged on the upper shell and a lower supporting part arranged on the lower shell, and the upper supporting part and the lower supporting part are fixedly connected. At least one inner supporting structure is arranged in the flat air filter, the structural strength of the air filter is improved, and the air filter has the advantages of being simple in structure and convenient to assemble.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle air intake systems, in particular to an air filter with an inner supporting structure. Background Art

[0002] Nowadays, extended-range vehicles and PHEV vehicles are becoming more and more popular. In the engine compartment of these vehicles, not only the components required for traditional fuel vehicles such as range extenders, engines, gearboxes, etc., but also the components required for electric vehicles such as motors must be arranged, resulting in very limited space in the engine compartment.

[0003] In order to improve the space utilization of the engine compartment, the air filter can only be arranged on the top of the range extender and the engine. In order to meet the intake resistance and NVH performance required by the engine, the air filter must reach a certain volume. However, due to the limited height of the top, the cross-sectional area of ​​the air filter can only be increased to meet the volume requirement. Therefore, a flat air filter appears. However, due to the large cross-sectional area, the structural strength of the upper and lower surfaces of this type of air filter is relatively poor. Utility Model Content

[0004] The utility model aims to provide an air filter with simple structure and high strength.

[0005] The purpose of the utility model is achieved in this way:

[0006] An air filter with an internal support structure, comprising:

[0007] The housing comprises an upper housing and a lower housing, the two forming an inner cavity;

[0008] A filter element is installed in the inner cavity, and at least one installation hole is opened in the center thereof; and

[0009] At least one inner support structure, passing through corresponding mounting holes and connecting the upper shell and the lower shell;

[0010] Wherein, the inner support structure includes an upper support portion arranged on the upper shell and a lower support portion arranged on the lower shell, and the upper support portion and the lower support portion are fixedly connected.

[0011] The utility model is further provided with a positioning convex portion being provided on the end surface of the upper supporting portion, and a positioning groove being matched with the positioning convex portion being provided on the end surface of the lower supporting portion.

[0012] The utility model is further provided that the inner support structure also includes a fastener, the positioning protrusion is provided with an internal threaded hole, the bottom of the positioning groove is provided with a through hole, and the fastener passes through the through hole and is fixedly connected with the internal threaded hole.

[0013] The utility model is further provided with that the upper supporting part and the lower supporting part are coaxially arranged.

[0014] The utility model is further provided with a hollow sealing member on the installation hole of the filter element, and the sealing member abuts between the upper supporting portion and the lower supporting portion.

[0015] The utility model is further provided with a positioning ring column being provided at the middle part of the end of the lower support part, and the positioning groove being formed in the positioning ring column; and an avoidance hole being opened in the sealing component, and the positioning ring column is fixedly connected with the lower support part after passing through the avoidance hole.

[0016] The utility model is further provided with a contact ring column for contacting the sealing member on the outer side of the positioning ring column, and a receiving groove is formed between the two; a guide ring portion is extended from one end of the avoidance hole of the sealing member, and the guide ring portion is located in the receiving groove.

[0017] The utility model is further provided that the outer periphery of the sealing member is provided with an end surface connection portion and / or a hole wall connection portion fixedly connected to the filter element.

[0018] The utility model is further provided with a partition plate in the middle of the shell, which divides the inner cavity into a first cavity and a second cavity; an air inlet connector connected to the first cavity is provided on one side of the lower shell, and an air outlet connector connected to the second cavity is provided on the other side, and the filter element is installed in the first cavity.

[0019] The utility model is further provided with a sealing strip on the periphery of the filter element; a lower partition is provided on the lower shell, and a sealing groove for accommodating the sealing strip is provided on the edge of the lower shell and the lower partition;

[0020] The inner wall of the upper shell is provided with a plurality of guide bars arranged along the gas flow direction and an upper partition provided on the guide bars, an air guide channel is formed between two adjacent guide bars, and the upper partition and the lower partition together form the partition.

[0021] Compared with the prior art, the utility model has the following outstanding and beneficial technical effects:

[0022] 1. The utility model is provided with at least one inner support structure inside the flat air filter, which is beneficial to further improve the structural strength of the air filter and has the advantages of simple structure and convenient assembly.

[0023] 2. The utility model is provided with a seal between the upper support part and the lower support part, and is fixed by a fastener, which is beneficial to increase the sealing of the air filter. At the same time, the seal is fixed at the end of the installation hole of the filter element. On the one hand, the filter element can be fixed with the help of the internal support structure to prevent the middle part of the filter element from collapsing; on the other hand, the gap in the installation hole can be blocked to prevent unfiltered air from directly entering the engine through the gap. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is one of the structural schematic diagrams of the utility model.

[0025] Figure 2 This is the second structural diagram of the present utility model.

[0026] Figure 3 It is an exploded view of the utility model.

[0027] Figure 4 It is a cross-sectional view of the utility model.

[0028] Figure 5 yes Figure 4 A partial enlarged view of point A in the middle.

[0029] Figure 6 It is a structural schematic diagram of the utility model with the upper shell opened.

[0030] The meaning of the symbols in the figure:

[0031] Upper housing 1; lower housing 2; filter element 3; fastener 4; seal 5; sealing strip 6;

[0032] Upper support portion 11; positioning protrusion 111; guide strip 12; guide hole 121; upper partition 13; threaded column 14; fixing screw 15;

[0033] Lower support portion 21; positioning groove 211; through hole 2111; positioning ring column 212; abutting ring column 213; receiving groove 214; air inlet connector 22; air outlet connector 23; lower partition 24; supporting foot 25;

[0034] Mounting hole 31;

[0035] Avoidance hole 51; guide ring portion 52; end surface connection portion 53; hole wall connection portion 54;

[0036] The first cavity 100 ; the second cavity 200 . DETAILED DESCRIPTION

[0037] The utility model is further described below in conjunction with specific embodiments:

[0038] like Figure 1-3As shown, an air filter with an internal support structure includes a housing, a filter element 3 and at least one internal support structure. This embodiment is mainly applicable to a flat air filter whose length and width dimensions are greater than the height dimension, as follows:

[0039] The housing comprises an upper housing 1 and a lower housing 2, the edges of which are fastened by screws to form an inner cavity. The filter element 3 is installed in the inner cavity, and at least one mounting hole 31 is opened in the middle thereof. The inner support structure passes through the corresponding mounting hole 31 and connects the upper housing 1 and the lower housing 2, thereby increasing the strength of the housing. The number of the mounting holes 31 and the inner support structure can be adaptively set according to the strength requirements of the air filter.

[0040] Specifically, Figure 4-5 As shown, the inner support structure includes an upper support portion 11 arranged on the upper shell 1, a lower support portion 21 arranged on the lower shell 2, and a fastener 4 (preferably a screw). The upper support portion 11 and the lower support portion 21 are coaxially arranged, and the upper support portion 11 is cylindrical, and a positioning protrusion 111 is arranged on its lower end surface, and the positioning protrusion 111 is provided with an internal threaded hole. The lower support portion 21 is a hollow cylindrical body, and a positioning ring column 212 is extended on its upper end surface. A positioning groove 211 adapted to the positioning protrusion 111 is formed in the positioning ring column 212, and a through hole 2111 is formed at the bottom of the positioning groove 211. The fastener 4 passes through the inner cavity of the lower support portion 2 and the through hole 2111 and is fixedly connected to the internal threaded hole, so that the upper support portion 11 and the lower support portion 21 are fixedly connected.

[0041] In order to increase the sealing performance of the connection of the internal support structure, a hollow sealing member 5 is fixed on the mounting hole 31 of the filter element 3, and an avoidance hole 51 is opened in the sealing member 5. The positioning ring column 212 passes through the avoidance hole 51 and is fixedly connected to the lower support portion 21, so that the sealing member 5 is abutted between the upper support portion 11 and the lower support portion 21.

[0042] Specifically, the filter element 3 of this embodiment is made of filter paper, and the mounting hole 31 is opened by a rotary cutting process. The material of the seal 5 is PU glue, and in order to increase the fixing strength with the filter element 3, the outer periphery of the seal 5 is provided with an end surface connection part 53 and / or a hole wall connection part 54 fixedly connected to the filter element 3.

[0043] The outer side of the positioning ring column 212 is provided with an abutting ring column 213 for abutting the sealing member 5. The abutting ring column 213 and the positioning ring column 212 are coaxially arranged, and a receiving groove 214 is formed between the two. A guide ring portion 52 is extended from one end of the avoidance hole 51 of the sealing member 5. The guide ring portion 52 is located in the receiving groove 214 and abuts against the bottom of the receiving groove 214. The inner diameter of the upper end of the guide ring portion 52 (which can also be understood as the inner diameter of the avoidance hole 51) is adapted to the outer diameter of the positioning ring column 212, and the inner diameter of the other end thereof gradually increases, so as to facilitate the guiding and insertion of the positioning ring column 212. At the same time, in order to facilitate the installation of the sealing member 5, the end of the positioning ring column 212 extends out of the end face of the abutting ring column 213.

[0044] During installation, the filter element 3 is first installed in the lower housing 2, and the seal 5 is aligned with the lower support portion 21 and installed, so that the positioning ring column 212 is located in the avoidance hole 51 of the seal 5, and the abutting ring column 213 abuts against the lower end surface of the seal 5. Then the upper housing 1 is installed, so that the positioning protrusion 111 is inserted into the positioning groove 211, and the end surface of the upper support portion 11 abuts against the upper end surface of the seal 5, and finally fastened by the fastener 4.

[0045] At this time, under the action of the fastener 4, the seal 5 is pressed by the abutment ring column 213 and the upper support portion 11 to achieve end face sealing. At the same time, the seal 5 is deformed after being pressed, so that the inner wall of the avoidance hole 51 abuts against the outer side of the positioning ring column 212, which can achieve further side wall sealing, thereby improving the sealing performance of the air filter.

[0046] In addition, the lower end face of the seal 5 is abutted by the abutment ring column 213, and its outer end face connection portion 53 and / or the hole wall connection portion 54 are fixedly connected to the filter element 3. Therefore, the seal 5 can also block the gap in the mounting hole 31 to prevent unfiltered air from directly entering the engine through the gap.

[0047] like Figure 3-4 As shown, a partition is provided in the middle of the housing, and the inner cavity is divided into a first cavity 100 and a second cavity 200; an air inlet connector 22 connected to the first cavity 100 is provided on one side of the lower housing 2, and an air outlet connector 23 connected to the second cavity 200 is provided on the other side; the filter element 3 is installed in the first cavity 100, and divides the first cavity 100 into a dirty air space and a clean air space. A noise reduction component is provided in the second cavity 200.

[0048] Specifically, a sealing strip 6 is disposed on the outer periphery of the filter element 3 ; a lower partition 24 is disposed on the lower shell 2 , and a sealing groove for accommodating the sealing strip 6 is provided on the edge of the lower shell 2 and the lower partition 24 .

[0049] like Figure 6As shown, the inner wall of the upper shell 1 is provided with a plurality of guide bars 12 arranged along the gas flow direction and an upper partition 13 provided on the guide bars 12. An air guide channel is formed between two adjacent guide bars 12. The air guide channel passes through the upper partition 13 to form a guide hole 121. The upper partition 13 and the lower partition 24 together form the partition. The upper shell 1 and the lower shell 2 are sealed and connected by a sealing strip 6. Unpurified air enters the dirty air space from the air inlet joint 22, then enters the clean air space after being filtered by the filter element, and finally is sent out from the air outlet joint 23 of the second chamber 200 through the air guide channel.

[0050] In order to increase stability, a threaded column 14 is provided on the upper partition 13 , and a fixing hole is provided on the lower partition 24 . A fixing screw 15 passes through the fixing hole and is fixedly connected to the threaded column 14 .

[0051] In order to facilitate the installation of the air filter, the upper housing 1 and / or the lower housing 2 are provided with a plurality of supporting feet 25 for connecting to the engine compartment. In this embodiment, four supporting feet 25 are provided on the lower housing 2.

[0052] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An air filter with an internal support structure, characterized in that: include: The housing comprises an upper housing (1) and a lower housing (2), the two forming an inner cavity; A filter element (3) is installed in the inner cavity, and at least one installation hole (31) is opened in the middle thereof; and At least one internal support structure, passing through the corresponding mounting hole (31) and connecting the upper shell (1) and the lower shell (2); The inner support structure comprises an upper support portion (11) arranged on the upper shell (1) and a lower support portion (21) arranged on the lower shell (2), and the upper support portion (11) and the lower support portion (21) are fixedly connected.

2. The air filter with an internal support structure according to claim 1, characterized in that: The end surface of the upper support portion (11) is provided with a positioning protrusion (111), and the end surface of the lower support portion (21) is provided with a positioning groove (211) matched with the positioning protrusion (111).

3. The air filter with an internal support structure according to claim 2, characterized in that: The inner support structure further comprises a fastener (4); the positioning protrusion (111) is provided with an internal threaded hole; the bottom of the positioning groove (211) is provided with a through hole (2111); the fastener (4) passes through the through hole (2111) and is fixedly connected to the internal threaded hole.

4. The air filter with an internal support structure according to claim 1, characterized in that: The upper support portion (11) and the lower support portion (21) are coaxially arranged.

5. An air filter with an internal support structure according to any one of claims 2 to 4, characterized in that: A hollow sealing member (5) is provided on the mounting hole (31) of the filter element (3), and the sealing member (5) abuts between the upper supporting portion (11) and the lower supporting portion (21).

6. The air filter with an internal support structure according to claim 5, characterized in that: A positioning ring column (212) is provided in the middle of the end of the lower support portion (21), and a positioning groove (211) is formed in the positioning ring column (212); an avoidance hole (51) is provided in the sealing member (5), and the positioning ring column (212) is fixedly connected to the lower support portion (21) after passing through the avoidance hole (51).

7. The air filter with an internal support structure according to claim 6, characterized in that: An abutting ring column (213) for abutting the sealing member (5) is arranged on the outer side of the positioning ring column (212), and a receiving groove (214) is formed between the two; a guide ring portion (52) is extended from one end of the avoidance hole (51) of the sealing member (5), and the guide ring portion (52) is located in the receiving groove (214).

8. The air filter with an internal support structure according to claim 6, characterized in that: The outer periphery of the sealing member (5) is provided with an end surface connection portion (53) and / or a hole wall connection portion (54) fixedly connected to the filter element (3).

9. The air filter with an internal support structure according to claim 1, characterized in that: A partition is provided in the middle of the shell, dividing the inner cavity into a first cavity (100) and a second cavity (200); an air inlet connector (22) connected to the first cavity (100) is provided on one side of the lower shell (2), and an air outlet connector (23) connected to the second cavity (200) is provided on the other side; the filter element (3) is installed in the first cavity (100).

10. The air filter with an inner support structure according to claim 9, characterized in that: A sealing strip (6) is arranged on the outer periphery of the filter element (3); a lower partition (24) is arranged on the lower shell (2); and a sealing groove for accommodating the sealing strip (6) is provided on the edge of the lower shell (2) and the lower partition (24); The inner wall of the upper shell (1) is provided with a plurality of guide bars (12) arranged along the gas flow direction and an upper partition (13) arranged on the guide bars (12), a gas guide channel is formed between two adjacent guide bars (12), and the upper partition (13) and the lower partition (24) together form the partition plate.

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