Underbody air guide device of commercial vehicle

Abstract

The utility model discloses an underbody air guide device for a commercial vehicle. The underbody air guide device comprises an underbody air guide plate, a front-row support assembly, a rear-row support assembly, an air guide plate front framework and an air guide plate rear framework, the front-row support assembly is composed of two first installation pieces arranged side by side. The rear-row support assembly is composed of a second installation piece and two third installation pieces. A two-in-front and three-in-rear mounting piece arrangement mode is adopted, meanwhile, the structure of the front and rear air deflector frameworks is combined, good stress dispersion is achieved, the stress concentration risk is reduced, the stability of the whole structure is improved, and meanwhile light weight and structural strength are well balanced; interference resistance is reduced by reducing more protruding faces caused by a complex structure at the bottom of a whole vehicle, wind resistance and oil consumption are reduced, the sealing requirement below an engine and a heat dissipation cooling structure is effectively met, part corrosion of a chassis structure caused by muddy water sputtering is reduced, meanwhile, the complexity of a chassis visual structure is reduced through range covering, and the service life of the chassis is prolonged. And better visual beauty optimization is brought.

Description

Technical Field

[0001] The utility model relates to the technical field of commercial vehicle undercarriages, in particular to an undercarriage air guide device for a commercial vehicle. Background Art

[0002] In recent years, against the backdrop of increasingly fierce market competition, reducing commercial vehicle fuel consumption and improving fuel economy have become the focus of major automakers. The current technical routes for reducing commercial vehicle fuel consumption mainly focus on improving engine combustion efficiency, improving transmission system transmission efficiency and reducing vehicle drag coefficient.

[0003] Among them, the existing commercial vehicle's method of reducing the drag coefficient mainly relies on changing the shape of the vehicle. The existing technical problem is that the development cycle of changing the shape of the existing product is long and the cost is high. In addition, since there is no sealed guide device at the bottom of the existing vehicle, the structure is complex and there are many protruding surfaces, not only will it generate large interference resistance and internal circulation resistance when driving at high speeds, which is not conducive to reducing the fuel consumption of the vehicle, but the engine fan airflow and the airflow at the bottom of the vehicle body directly impact the ground and the bottom structure of the vehicle, which is easy to generate dust, resulting in obstruction of the driver's vision, air pollution, reduced corrosion resistance of the bottom chassis parts, insufficient aesthetics, and many other problems. Summary of the Invention

[0004] To address the aforementioned technical issues, the present invention provides an underbody air deflector for commercial vehicles. To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is provided below. This summary is not intended to be a comprehensive review, identify key or important components, or delineate the scope of protection for these embodiments. Its sole purpose is to present some concepts in a simplified form, serving as a prelude to the detailed description that follows.

[0005] The utility model adopts the following technical solutions:

[0006] Provided is a commercial vehicle underbody air deflector device, comprising: an underbody air deflector, a front support assembly, a rear support assembly, an air deflector front frame, and an air deflector rear frame;

[0007] The bottom air deflector is pressed with upwardly protruding grid-shaped reinforcement ribs, and two rows of transversely arranged bosses and grooves are formed on the upper surface and the lower surface of the bottom air deflector respectively;

[0008] The front support assembly is composed of two first mounting members arranged in parallel, and the front frame of the air deflector is arranged in the groove located at the front side and is connected to the first mounting members by bolts;

[0009] The rear support assembly is composed of a second mounting member and a third mounting member located on both sides of the second mounting member. The rear frame of the air deflector is arranged in the groove located on the rear side and is connected to the second mounting member and the third mounting member by bolts.

[0010] Furthermore, the first mounting part is arranged on the boss located on the front side; the first mounting part includes: an L-shaped sheet metal part and a U-shaped sheet metal part, the L-shaped sheet metal part is provided with a screw hole for connecting with the underbody air deflector, the U-shaped sheet metal part is welded on the front side of the L-shaped sheet metal part, and the U-shaped sheet metal part is provided with a screw hole for connecting with the front lower protection of the vehicle.

[0011] Furthermore, the second mounting member is arranged at the middle position of the boss located on the rear side; the second mounting member includes: an oblique sheet metal member and a reinforcing rib, the reinforcing rib is welded to the oblique sheet metal member, and screw holes are provided at both ends of the oblique sheet metal member for connecting with the underbody air deflector and the vehicle trough beam.

[0012] Furthermore, the third mounting member is arranged on the boss located on the rear side; the third mounting member includes: a seamless support tube and a transverse plate, the seamless support tube is perpendicular to the transverse plate and is connected to the transverse plate by bolts, a screw hole for connecting to the vehicle frame is provided on the top of the seamless support tube, and a screw hole for connecting to the underbody air deflector is provided on the transverse plate.

[0013] Furthermore, the bottom air deflector is made of ABS plastic.

[0014] Furthermore, an upward flange structure is provided at the edge of the bottom air deflector.

[0015] Furthermore, a clearance gap is provided on the bottom air deflector.

[0016] Furthermore, downward flange structures are provided at the edges of the front frame of the air deflector and the rear frame of the air deflector.

[0017] Beneficial effects brought about by the utility model:

[0018] 1. The two-at-front-three-at-the-rear mounting arrangement, combined with the front and rear air deflector frame structure, achieves effective stress dispersion, reduces the risk of stress concentration, improves overall structural stability, and achieves a good balance between lightweighting and structural strength.

[0019] 2. By reducing the number of protruding surfaces caused by the complex structure of the bottom of the vehicle, the interference resistance is reduced, which not only reduces the processing difficulty, reduces wind resistance, reduces fuel consumption, and brings better power economy, but also effectively meets the sealing requirements under the engine and heat dissipation cooling structure, reduces the corrosion of chassis structure components caused by mud and water splashing, and at the same time reduces the complexity of the chassis visual structure through range covering, bringing better visual aesthetic optimization. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a schematic structural diagram of an underbody air guide device for a commercial vehicle according to the utility model;

[0022] Figure 2 This is a schematic diagram of the exploded structure of an underbody air guide device for a commercial vehicle according to the utility model;

[0023] Figure 3 The utility model is a schematic diagram of the installation of an underbody air guide device for a commercial vehicle. DETAILED DESCRIPTION

[0024] The following describes the embodiments of the present invention in detail with reference to the accompanying drawings. It should be understood that the embodiments described are only a portion of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without inventive effort are within the scope of protection of the present invention.

[0025] like Figure 1-3 As shown, in some illustrative embodiments, a commercial vehicle underbody air deflector device is provided, comprising: an underbody air deflector 1, a front support assembly, a rear support assembly, an air deflector front frame 5, and an air deflector rear frame 6.

[0026] The underbody air deflector 1 is made of ABS plastic. Using ABS plastic as the material of the underbody air deflector not only achieves lightweighting of the product and reduces material costs, but also has multiple advantages such as corrosion resistance, insulation, molding and aesthetics.

[0027] An upward flange structure 12 is provided at the edge of the bottom air deflector 1. The main function of the upward flange structure 12 is to improve the overall strength and stability of the bottom air deflector 1, so that it can better resist external impact and vibration during vehicle operation and improve durability.

[0028] A clearance notch 13 is provided on the underbody air deflector 1. The purpose of the clearance notch 13 is to ensure that, after the underbody air deflector 1 is installed, it does not physically contact or interfere with components such as the tilt pump and wiring harness at the bottom of the vehicle, thereby ensuring that the functions of the tilt pump and wiring harness are not affected and that they maintain their normal operation.

[0029] The underbody wind deflector 1 is formed with a grid of upwardly projecting reinforcement ribs 11, and two rows of transversely arranged bosses and grooves are formed on the upper and lower surfaces of the underbody wind deflector 1, respectively. The grid of reinforcement ribs 11 comprises two transverse rib structures and several vertical rib structures. The two transverse rib structures are two rows of transversely arranged bosses, one located at the front and one located at the rear. The front bosses are designated as front bosses 111, and the rear bosses are designated as rear bosses 112. Because the grid of reinforcement ribs 11 are formed by pressing upwardly on the plate body of the underbody wind deflector 1, two rows of transversely arranged grooves are formed on the lower surface of the underbody wind deflector 1, corresponding to the positions of the bosses.

[0030] The front support assembly consists of two juxtaposed first mounting members 4. The front air deflector frame 5 is positioned within a groove on the front side and connected to the first mounting members 4 via bolts. The first mounting member 4 is mounted on the front boss 111 and comprises an L-shaped sheet metal member 42 and a U-shaped sheet metal member 41. The L-shaped sheet metal member 42 is provided with screw holes for connecting to the underbody air deflector 1. The U-shaped sheet metal member 41 is welded to the front side of the L-shaped sheet metal member 42 and also includes screw holes for connecting to the vehicle's front underbody guard 7.

[0031] The rear support assembly is composed of a second mounting member 2 and two third mounting members 3. The rear frame 6 of the air deflector is set in a groove located on the rear side and is connected to the second mounting member 2 and the third mounting member 3 by bolts.

[0032] There is one second mounting member 2, positioned midway along the rear boss 112. It comprises an oblique sheet metal member 22 and a reinforcing rib 21. The oblique sheet metal member 22 is angled, and the reinforcing rib 21 is welded to the oblique sheet metal member 22. Screw holes are provided at both ends of the oblique sheet metal member 22 for connection to the underbody air deflector 1 and the vehicle trough beam 8. This allows the second mounting member 2 to be bolted to these two elements.

[0033] Two third mounting members 3 are provided, each mounted on the rear boss 112 and located on either side of the second mounting member 2. The third mounting members 3 comprise a seamless support tube 31 and a transverse plate 32. The seamless support tube 31 is perpendicular to the transverse plate 32 and is bolted to the transverse plate 32. The top of the seamless support tube 31 defines a screw hole for connection to the vehicle frame 9, while the transverse plate 32 defines a screw hole for connection to the underbody air deflector 1.

[0034] A downward flange structure 56 is provided at the edges of the front frame 5 and the rear frame 6 of the air deflector. The design of the downward flange structure 56 can increase the bending resistance of the frame and increase the structural strength.

[0035] The second mounting member 2 connects and fixes the underbody air deflector 1 to the trough beam 8 by means of bolts, and the two third mounting members 3 symmetrically assemble the underbody air deflector 1 to the vehicle frame 9 by means of bolts. At the same time, the two first mounting members 4 symmetrically assemble the underbody air deflector 1 to the front lower guard 7 of the vehicle by means of bolts.

[0036] In the present application, the third mounting member 3 and the first mounting member 4 adopt a bilaterally symmetrical bracket structure in consideration of the universality of the bracket structure, thereby reducing mold development work and simplifying the lever arm.

[0037] In the present application, the connection stress of the underbody air deflector 1 is dispersed by staggering five mounting parts and combining them with the design of a grid-like reinforcement rib 11. That is, the arrangement of two front and three rear mounting parts is combined with the structure of the front and rear air deflector frames, which achieves better stress dispersion, reduces the risk of stress concentration, improves the stability of the overall structure, and at the same time better balances lightweighting and structural strength.

[0038] In addition, the present application reduces special-shaped structures, that is, by reducing the number of protruding surfaces caused by the complex structure of the bottom of the vehicle, thereby reducing interference resistance and guiding the airflow through the engine fan. It not only reduces processing difficulty, reduces wind resistance, reduces fuel consumption, and brings better power economy, but also effectively completes the sealing requirements under the engine and heat dissipation cooling structure, reduces the corrosion of chassis structure components caused by mud and water splashing, and at the same time reduces the complexity of the chassis visual structure through range covering, bringing better visual aesthetic optimization.

[0039] This application targets the existing product chassis structure, clearly defines wind resistance and reliability as core indicators, and designs from the following perspectives based on the physical boundaries of the product: confirm the engine's Z downward limit position based on the existing engine structure and suspension structure, and the Z upward limit of the underbody air guide device cannot exceed this position; based on the product's existing front lower protection structure and approach angle requirements, confirm that the Z downward limit position of the underbody air guide device is not lower than the front lower protection, that is, based on the lower wing surface of the frame as the Z zero point, the Z dimension of the underbody air guide device is not less than -379mm.

[0040] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A commercial vehicle underbody air guide device, characterized in that: include: Underbody air deflector, front support assembly, rear support assembly, air deflector front frame, and air deflector rear frame; The bottom air deflector is pressed with upwardly protruding grid-shaped reinforcement ribs, and two rows of transversely arranged bosses and grooves are formed on the upper surface and the lower surface of the bottom air deflector respectively; The front support assembly is composed of two first mounting members arranged in parallel, and the front frame of the air deflector is arranged in the groove located at the front side and is connected to the first mounting members by bolts; The rear support assembly is composed of a second mounting member and a third mounting member located on both sides of the second mounting member. The rear frame of the air deflector is arranged in the groove located on the rear side and is connected to the second mounting member and the third mounting member by bolts.

2. The commercial vehicle underbody air guide device according to claim 1, characterized in that: The first mounting member is arranged on the boss located on the front side; The first mounting part includes: an L-shaped sheet metal part and a U-shaped sheet metal part, the L-shaped sheet metal part is provided with a screw hole for connecting to the underbody air deflector, the U-shaped sheet metal part is welded to the front side of the L-shaped sheet metal part, and the U-shaped sheet metal part is provided with a screw hole for connecting to the front lower protection of the vehicle.

3. The underbody air guide device for a commercial vehicle according to claim 2, characterized in that: The second mounting member is provided at a middle position of the boss located at the rear side; The second mounting member includes an oblique sheet metal member and a reinforcing rib, wherein the reinforcing rib is welded to the oblique sheet metal member, and screw holes for connecting with the bottom air deflector and the vehicle channel beam are provided at both ends of the oblique sheet metal member.

4. The underbody air guide device for a commercial vehicle according to claim 3, characterized in that: The third mounting member is provided on the boss located at the rear side; The third mounting member includes: a seamless support tube and a transverse plate. The seamless support tube is perpendicular to the transverse plate and is connected to the transverse plate by bolts. A screw hole is provided on the top of the seamless support tube for connecting to the vehicle frame, and a screw hole is provided on the transverse plate for connecting to the bottom air deflector.

5. The commercial vehicle underbody air guide device according to claim 4, characterized in that: The bottom air deflector is made of ABS plastic.

6. The underbody air guide device for a commercial vehicle according to claim 5, characterized in that: An upward flange structure is provided at the edge of the bottom air deflector.

7. The underbody air guide device for a commercial vehicle according to claim 6, characterized in that: A clearance gap is provided on the bottom air deflector.

8. The underbody air guide device for a commercial vehicle according to claim 7, characterized in that: Downward flange structures are provided at the edges of the front frame of the air deflector and the rear frame of the air deflector.

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