Clean air inlet pipe for automobile

Abstract

The automobile air inlet clean air pipe comprises the upper shell, the middle shell and the lower shell, the middle shell is embedded in the lower shell and fixedly connected with the lower shell in a clamped mode, installation is easy, the middle shell can be limited through a limiting structure between the middle shell and the lower shell, and the middle shell is effectively prevented from loosening; the upper shell covers the lower shell and is fixed with the middle shell and the lower shell in a one-time welding manner, so that the production cost can be effectively reduced, and the production efficiency can be improved; the upper shell, the middle shell and the lower shell are all made of thermoplastic plastic materials, the weight can be effectively reduced, mass production can be achieved through a mold, the product consistency is excellent, and the raw material cost can be remarkably reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile parts, and particularly relates to a clean air pipe for automobile air intake. BACKGROUND

[0002] The clean air pipe for automobile air intake is an important component of the automobile air intake system, and mainly serves to connect the rear end of an air filter element with an air intake end of an engine to provide clean, dry, sufficient and stable air for the engine.

[0003] The existing clean air pipe for automobile air intake integrates multiple interfaces, such as a crankcase ventilation hose interface, an EGR (Exhaust Gas Recirculation) exhaust gas recirculation interface, and a carbon canister interface, and therefore has a complex structure and is often designed as an upper shell, a middle shell and a lower shell, and a secondary welding process is used to weld the three shells into one whole, which requires two sets of welding equipment, has a high production cost and a low production efficiency. In addition, the dimensional stability of the product is reduced and the product quality is decreased after the secondary welding. SUMMARY

[0004] Therefore, the embodiments of the utility model provide the clean air pipe for automobile air intake to solve the technical problems of the existing clean air pipe for automobile air intake, such as a high production cost, a low production efficiency and unstable product quality.

[0005] The clean air pipe for automobile air intake provided by the embodiments of the utility model comprises an upper shell, a middle shell and a lower shell, the middle shell is embedded in the lower shell and is fixed by clamping with the lower shell, and the upper shell is arranged above the lower shell and is fixed by one-time welding with the middle shell and the lower shell.

[0006] Optionally, the middle shell is provided with a clamping groove, and the lower shell is provided with a clamping block matched with the clamping groove.

[0007] Optionally, the clamping groove is provided with a guide surface for guiding the clamping block to be clamped in.

[0008] Optionally, the middle shell is provided with a limiting groove, and the lower shell is provided with a limiting convex rib matched with the limiting groove.

[0009] Optionally, the lower shell is provided with a limiting convex platform for abutting against the edge of the middle shell.

[0010] Optionally, the middle shell is provided with an NVH (Noise Vibration Harshness) opening.

[0011] Optionally, the edges of the upper shell, the middle shell and the lower shell are all provided with welding ribs, and the welding rib of the upper shell can abut against the welding ribs of the middle shell and the lower shell at the same time.

[0012] Optionally, the upper shell, the middle shell and the lower shell are made of thermoplastic plastic material.

[0013] The embodiments of the utility model have the following beneficial effects:

[0014] 1. The middle shell and the lower shell are clamped and fixed by the clamping structure, simple installation, and the middle shell can be limited by the limiting structure between the middle shell and the lower shell, effectively preventing the middle shell from loosening; after the middle shell and the lower shell are connected, they can be directly welded and fixed with the upper shell once, compared with the existing secondary welding process, which can effectively reduce the production cost and improve the production efficiency.

[0015] 2. The upper shell, the middle shell and the lower shell are made of thermoplastic plastic material, which can effectively reduce the weight, and can be mass-produced by mold, the product consistency is excellent, and the raw material cost can be significantly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0017] Figure 1 It is the assembly schematic view of the embodiment of the utility model;

[0018] Figure 2 It is the exploded state schematic view of the embodiment of the utility model;

[0019] Figure 3 It is the top view of the middle shell in the embodiment of the utility model;

[0020] Figure 4 It is the top view of the lower shell in the embodiment of the utility model;

[0021] Figure 5 It is the top view of the middle shell and the lower shell in the connected state of the embodiment of the utility model;

[0022] Figure 6 It is the A-A sectional view of the embodiment of the utility model; Figure 5

[0023] Figure 7 It is the B-B sectional view of the embodiment of the utility model; Figure 5

[0024] Figure 8 It is the C-C sectional view of the embodiment of the utility model; Figure 5

[0025] Figure 9 ​​​The welding schematic diagram of the embodiment of the utility model;

[0026] The numbers in the figure represent:

[0027] 1, upper shell; 11, upper shell welding rib;

[0028] 2, middle shell; 21, first clamping groove; 22, second clamping groove; 23, limiting recess; 24, NVH opening; 25, middle shell welding rib;

[0029] 3, lower shell; 31, first clamping block; 32, second clamping block; 33, limiting convex rib; 34, limiting boss; 35, lower shell welding rib. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0031] In addition, it should be understood that the specific embodiments described herein are only used to illustrate and explain the utility model, and are not used to limit the utility model. In the utility model, the orientation words such as 'upper' and 'lower' are usually used to refer to the upper and lower of the device in the actual use or working state, and the specific is the direction of the drawing in the drawing; and 'inner' and 'outer' are used in relation to the outline of the device. In addition, the terms 'first','second', etc. are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by 'first','second', etc. can be explicitly or implicitly included one or more features.

[0032] Please refer to Figure 1 、 Figure 2 The embodiment of the utility model provides a kind of automobile intake clean air pipe, including upper shell 1, middle shell 2 and lower shell 3, wherein, middle shell 2 is embedded in lower shell 3, upper shell 1 is covered in the upper of lower shell 3, and upper shell 1, middle shell 2 and lower shell 3 are all using thermoplastic plastic material quality.

[0033] Middle shell 2 is fixed by clamping structure with lower shell 3. Specifically, as shown in Figures 3-8As shown in the drawings, the structural surface of the middle shell 2 is provided with a first clamping groove 21, the edge of the middle shell 2 is provided with a second clamping groove 22, and the lower shell 3 is correspondingly provided with a first clamping block 31 and a second clamping block 32 for clamping cooperation with the first clamping groove 21 and the second clamping groove 22. When assembling, the middle shell 2 is pressed into the lower shell 3 from top to bottom, so that the guide surface of the first clamping groove 21 abuts against the first clamping block 31 and the guide surface of the second clamping groove 22 abuts against the second clamping block 32. With the continuous pressing of the middle shell 2, the first clamping block 31 can be inserted into the first clamping groove 21 along the guide surface of the first clamping groove 21 to clamp the first clamping groove 21, and the second clamping block 32 can be inserted into the second clamping groove 22 along the guide surface of the second clamping groove 22 to clamp the second clamping groove 22, so as to clamp and fix the middle shell 2 and the lower shell 3.

[0034] Further, the middle shell 2 is provided with a limiting groove 23, the lower shell 3 is provided with a limiting convex rib 33 matched with the limiting groove 23, and when the middle shell 2 and the lower shell 3 are clamped and fixed, the limiting convex rib 33 can be embedded into the limiting groove 23 to limit the middle shell 2.

[0035] Further, a plurality of limiting convex bosses 34 are arranged at intervals on the edge of the lower shell 3, and when the middle shell 2 and the lower shell 3 are clamped and fixed, the limiting convex bosses 34 can abut against the edge of the middle shell 2 to support the edge of the middle shell 2 at the bottom.

[0036] Further, the middle shell 2 is also provided with an NVH opening 24, which can reduce the noise generated by air flow and reduce the vibration of the clean air pipe.

[0037] The upper shell 1, the middle shell 2 and the lower shell 3 are welded and fixed at one time. Specifically, as shown in the drawings, Figure 9 the edge of the upper shell 1 is provided with an upper shell welding rib 11, the edge of the middle shell 2 is provided with a middle shell welding rib 25, and the edge of the lower shell 3 is also provided with a lower shell welding rib 35. After the middle shell 2 and the lower shell 3 are connected, the upper shell 1 is placed above them, the upper shell welding rib 11 can abut against the middle shell welding rib 25 and the lower shell welding rib 35 at the same time, and then the abutting parts are heated, so that the upper shell 1, the middle shell 2 and the lower shell 3 can be welded and formed at one time.

[0038] In this paper, specific examples are applied to explain the principles and implementation modes of the utility model, and the above examples are only used to help understand the technical solutions and core ideas of the utility model; those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. An automotive clean air intake duct, characterized by: The shell comprises an upper shell, a middle shell and a lower shell, the middle shell is embedded in the lower shell and is fixed by clamping, the upper shell is above the lower shell and is fixed by welding with the middle shell and the lower shell.

2. An automotive clean air intake duct as claimed in claim 1, wherein: The middle shell is provided with a clamping groove, and the lower shell is provided with a clamping block matched with the clamping groove.

3. An automotive clean air intake duct as defined in claim 2, wherein: The clamping groove is provided with a guide surface for guiding the clamping block.

4. The clean air tube of claim 1, wherein: The middle shell is provided with a limiting recess, and the lower shell is provided with a limiting convex rib matched with the limiting recess.

5. The clean air tube of claim 1, wherein: The lower shell is provided with a limiting convex platform for abutting against the edge of the middle shell.

6. The clean air tube of claim 1, wherein: The middle shell is provided with NVH openings.

7. The clean air tube of claim 1, wherein: The edges of the upper shell, the middle shell and the lower shell are provided with welding ribs, and the welding rib of the upper shell can abut against the welding ribs of the middle shell and the lower shell at the same time.

8. The clean air tube of any one of claims 1-7, wherein: The upper shell, the middle shell and the lower shell are made of thermoplastic plastic material.

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