A new assembly structure for an air filter outlet pipe of a vehicle

Abstract

The present invention provides an air filter outlet pipe assembly structure for a vehicle, comprising an air filter body and an air filter pipe, wherein a mounting hole is provided on the air filter body, the air filter pipe is inserted into the mounting hole, a retaining rib portion and an undercut positioning portion are provided on the outer tube wall of the air filter pipe, a receiving groove is formed between the retaining rib portion and the undercut positioning portion, the width of the bottom of the receiving groove is equal to the wall thickness of the air filter body at that location, the upper portion of the undercut positioning portion close to the side wall of the air filter body is inclined outwardly so that the width of the upper portion of the receiving groove is less than the wall thickness of the air filter body at that location, after the air filter pipe is installed, the side wall of the air filter body is inserted into the receiving groove so that the upper portion of the undercut positioning portion is superfluously fitted to clamp the inner side wall of the air filter body, the retaining rib portion is located outside the air filter body, and the air filter body located outside the retaining rib portion is provided with a rubber retaining rib protruding upward. The present invention has a reliable structure and good air tightness.

Description

Technical Field

[0001] The invention relates to a vehicle air filter, in particular to a novel assembly structure of an air outlet pipe of a vehicle air filter. Background Art

[0002] At present, the air filter is mainly composed of parts such as the intake pipe, the air filter body, the filter element and the outlet pipe. The outlet pipe is usually made of rubber materials such as NBR+PVC through vulcanization molding, and the air filter body is usually made of modified polypropylene plastic injection molding. The assembly and fixation between the outlet pipe and the air filter body is mainly fixed by the cooperation of the outlet pipe retaining rib and the wall of the air filter body. Usually, in order to ensure the sealing between the outlet pipe and the air filter body, the matching clearance between the outlet pipe retaining rib and the air filter body is designed to be 0, that is, transitional fit. The existing treatment is mostly to open a mounting hole on the surface of the air filter, insert the outlet pipe vertically into the air filter step mounting hole, and then apply glue at the junction of the two to further ensure the sealing of the air filter.

[0003] The assembly structure between the air filter outlet pipe and the air filter body is such that during the gluing process, the glue will flow naturally under the action of gravity, and the glue will flow to the non-glued area, which will cause some problems in actual use, including: 1. Waste of glue; 2. Affecting the aesthetics of the air filter; 3. Uneven gluing, affecting the airtightness of the product; 4. The glue may overflow to the clean side of the air filter. In severe cases, the glue will be brought into the engine through the outlet pipe, endangering the normal operation of the vehicle engine. Summary of the invention

[0004] In view of the above problems, the present invention aims to provide an air outlet pipe assembly structure for a vehicle air filter. By adding glue ribs on the air filter body and improving the air outlet pipe rib structure, not only can the problem of uncontrolled glue overflow be effectively solved, but also the glue thickness between the air outlet pipe and the air filter body can be effectively guaranteed, thereby reducing costs and ensuring the sealing performance between the air outlet pipe and the air filter body.

[0005] The technical solution of the present invention is an air filter outlet pipe assembly structure for a vehicle, comprising an air filter body and an air filter pipe, the air filter body being provided with a mounting hole, the air filter pipe being inserted into the mounting hole, a retaining rib portion and an inverted buckle positioning portion being provided on the outer tube wall of the air filter pipe, a receiving groove being formed between the retaining rib portion and the inverted buckle positioning portion, the width of the bottom of the receiving groove being equal to the wall thickness of the air filter body at that location, the upper portion of the inverted buckle positioning portion close to one side of the side wall of the air filter body being inclined outwardly so that the width of the upper portion of the receiving groove is smaller than the wall thickness of the air filter body at that location, after the air filter pipe is installed, the side wall of the air filter body is inserted into the receiving groove so that the upper portion of the inverted buckle positioning portion is interference fit and clamps the inner wall of the air filter body, the retaining rib portion is located outside the air filter body, and the air filter body located outside the retaining rib portion is provided with an upwardly protruding rubber retaining rib.

[0006] Preferably, a circumferential positioning groove is provided on the air filter body, a retaining rib block extends from the retaining rib portion, and the retaining rib block is located in the circumferential positioning groove to achieve rotational positioning of the two in the circumferential direction.

[0007] Preferably, the gap between the retaining rib block and the circumferential positioning groove is a, 0.3mm≤a≤0.7mm.

[0008] Preferably, the gap between the glue-coated rib and the rib portion is b, 1.5mm≤b≤2mm.

[0009] Preferably, the interference fit between the upper portion of the undercut positioning portion and the inner wall of the air filter body is c, wherein 0.5 mm ≤ c ≤ 1 mm.

[0010] Preferably, the height of the undercut positioning portion from the bottom surface of the accommodating groove is d, 3mm≤d≤4mm, and the height of the retaining rib portion from the bottom surface of the accommodating groove is e, 4.5mm≤e≤5.5mm.

[0011] The assembly structure of the air outlet pipe and the air filter of the present invention enables the glue to be effectively applied to the required position of the product, which not only effectively solves the problem of uncontrolled glue overflow during gluing, but also reduces the waste of glue, while ensuring the effective thickness of the glue coating, greatly improving the airtight reliability of the air filter product and reducing market risks. Compared with the existing assembly structure of the air outlet pipe and the air filter, the present invention can reduce costs while effectively improving production efficiency and improving the airtight reliability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A front view of the present invention;

[0013] Figure 2 for Figure 1 A partial enlarged view of point B in the middle;

[0014] Figure 3 for Figure 1 Cross-sectional view along AA direction;

[0015] Figure 4 for Figure 3 A partial enlarged view of point C in the middle;

[0016] Figure 5 for Figure 3 Exploded diagram of

[0017] Among them: 1 - air filter body; 2 - air outlet pipe; 3 - mounting hole; 4 - retaining rib part; 5 - inverted positioning part; 6 - receiving groove; 7 - glue-coated retaining rib; 8 - circumferential positioning groove; 9 - retaining rib block. DETAILED DESCRIPTION

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0019] like Figures 1 to 5 As shown, the present invention provides an air filter outlet pipe assembly structure for a vehicle, comprising an air filter body 1 and an air filter 2, wherein the air filter body 1 is provided with a mounting hole 3, the air filter 2 is inserted into the mounting hole 3, a retaining rib portion 4 and an undercut positioning portion 5 are provided on the outer wall of the air filter 2, an accommodating groove 6 is formed between the retaining rib portion 4 and the undercut positioning portion 5, the width of the bottom of the accommodating groove 6 is equal to the wall thickness of the air filter body 1 at that location, the upper portion of the undercut positioning portion 5 close to the side wall of the air filter body 1 is inclined outwardly so that the width of the upper portion of the accommodating groove 6 is smaller than the width of the undercut positioning portion 5. The wall thickness of the air filter body 1 is measured, and after the outlet pipe 2 is installed, the side wall of the air filter body 1 is inserted into the accommodating groove 6 so that the upper part of the inverted positioning part 5 has an excess interference fit and clamps the inner wall of the air filter body 1. The retaining rib part 4 is located outside the air filter body 1, and the air filter body 1 located outside the retaining rib part 4 is provided with an upwardly protruding glue retaining rib 7. The glue retaining rib 7 can not only effectively solve the problem of uncontrolled glue overflow during gluing, but also reduce the waste of glue, while ensuring the effective thickness of the glue, greatly improving the airtight reliability of the air filter product, and reducing market risks.

[0020] Preferably, the air filter body 1 is provided with a circumferential positioning groove 8, and a retaining rib block 9 extends from the retaining rib portion 4. The retaining rib block 9 is located in the circumferential positioning groove 8 to realize the rotational positioning of the two in the circumferential direction, which can effectively solve the foolproof problem between the air outlet pipe 2 and the air filter body 1, avoid the problem of wrong installation of the product, and improve the reliability of product production and assembly.

[0021] Preferably, the gap between the retaining rib block 9 and the circumferential positioning groove 8 is a, 0.3mm≤a≤0.7mm.

[0022] Preferably, the gap between the glue-coated retaining rib 7 and the retaining rib portion 4 is b, 1.5 mm ≤ b ≤ 2 mm.

[0023] Preferably, the interference fit between the upper portion of the undercut positioning portion 5 and the inner wall of the air filter body 1 is c, wherein 0.5 mm ≤ c ≤ 1 mm.

[0024] Preferably, the height of the undercut positioning portion 5 from the bottom surface of the accommodating groove 6 is d, 3mm≤d≤4mm, and the height of the retaining rib portion 4 from the bottom surface of the accommodating groove 6 is e, 4.5mm≤e≤5.5mm.

[0025] During assembly, insert the air outlet pipe 2 into the mounting hole 3, pay attention to the orientation during the insertion process, and align the retaining rib block 9 with the direction of the circumferential positioning groove 8 for insertion. After insertion, the two will be positioned in the circumferential direction without rotation, and the tube wall of the air filter body 1 will fit into the accommodating groove 6. Since the air outlet pipe 2 is made of rubber, the upper part of the inverted positioning portion 5 will be deformed and interfered with to be clamped on the inner wall of the air filter body 1, so as to achieve a tight positioning of the two. Then pour glue into the gap between the retaining rib portion 4 and the glue-coated retaining rib 7. The glue will solidify in the gap between the two without turbulence. After the glue solidifies, the air outlet pipe 2 and the air filter body 1 form a good seal.

[0026] The above description is only a preferred embodiment of the present invention and does not impose any form of limitation on the invention. Any simple modification, equivalent change or modification made to the above embodiments based on the technical principle of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A vehicle air filter outlet pipe assembly structure, comprising an air filter body (1) and an outlet pipe (2), wherein the air filter body (1) is provided with a mounting hole (3), characterized in that: The air outlet pipe (2) is inserted into the mounting hole (3); a retaining rib portion (4) and an undercut positioning portion (5) are provided on the outer tube wall of the air outlet pipe (2); a receiving groove (6) is formed between the retaining rib portion (4) and the undercut positioning portion (5); the width of the bottom of the receiving groove (6) is equal to the wall thickness of the air filter body (1) at that location; the undercut positioning portion (5) is inclined outwardly along the radial outer side of the air outlet pipe, close to the side wall of the air filter body (1), so that the width of the receiving groove (6) in the radial outer side of the air outlet pipe is smaller than the wall thickness of the air filter body (1) at that location; after the air outlet pipe (2) is installed, the side wall of the air filter body (1) is inserted into the receiving groove (6) so that the undercut positioning portion (5) is tightly fitted with the inner side wall of the air filter body (1) along the radial outer side of the air outlet pipe; the retaining rib portion (4) is located outside the air filter body (1) and is The air filter body (1) is provided with an upwardly protruding glued rib (7) located outside the rib portion (4), and the gap between the glued rib (7) and the rib portion (4) forms a glue cavity so that glue can be poured into the gap between the glued rib (7) and the rib portion (4) during assembly, and the glue solidifies in the gap; the air filter body (1) is provided with a circumferential positioning groove (8), and a rib block (9) extends from the rib portion (4), and the rib block (9) is located in the circumferential positioning groove (8) to achieve rotational positioning of the two in the circumferential direction; the gap between the glued rib (7) and the rib portion (4) is b, 1.5 mm ≤ b ≤ 2 mm; the interference fit of the undercut positioning portion (5) with the inner side wall of the air filter body (1) along the radial outer side of the air outlet pipe is c, where 0.5 mm ≤ c ≤ 1 mm.

2. The vehicle air filter outlet pipe assembly structure according to claim 1, characterized in that: The gap between the retaining rib block (9) and the circumferential positioning groove (8) is a, 0.3 mm ≤ a ≤ 0.7 mm.

3. The vehicle air filter outlet pipe assembly structure according to claim 1, characterized in that: The height of the undercut positioning portion (5) from the bottom surface of the receiving groove (6) is d, 3mm≤d≤4mm, and the height of the retaining rib portion (4) from the bottom surface of the receiving groove (6) is e, 4.5mm≤e≤5.5mm.

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