Automobile dashboard cross beam

Abstract

The utility model relates to the technical field of automobile instrument panel cross beams, in particular to an automobile instrument panel cross beam, a main beam of the instrument panel cross beam is a C-shaped steel layer, different areas outside the C-shaped steel layer are wrapped with different composite material layers, in the area with the large strength requirement, the C-shaped steel layer is wrapped with the composite material layer made of nylon and glass fiber, and the composite material layer is made of nylon and glass fiber. In the area with the small strength requirement, the C-shaped steel layer is wrapped by the polypropylene and glass fiber composite material layers, and the two composite material layers are machined on the C-shaped steel layer in an injection molding mode. Part of the composite material is replaced by polypropylene and glass fiber, so that the weight of the main beam can be reduced, the light weight of the whole vehicle is realized, and meanwhile, the cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile instrument panel cross beam, and specifically provides an automobile instrument panel cross beam. BACKGROUND

[0002] The automobile instrument panel cross beam is an important supporting and reinforcing structure of the front part of the automobile, connects important components such as the vehicle body, the steering column and the instrument panel, and the strength, rigidity and weight of the automobile instrument panel cross beam have a great influence on the vibration and noise of the whole vehicle, and further affect the comfort of the passengers. In the prior art, the automobile instrument panel cross beam is mainly manufactured in the following three ways: a full-steel plate welding manufacturing method, a plastic-coated aluminum pipe manufacturing method and a plastic-wrapped C-shaped steel manufacturing method. In the full-steel plate welding manufacturing method, the sheet metal part is cut, stamped and bent, and then assembled by welding process. The full-steel plate manufacturing method leads to a large material weight, which is not conducive to the realization of lightweight, increases the fuel demand and emission demand of the automobile, and a large amount of waste is generated in the processing method, and the material utilization rate is low. The plastic-coated aluminum pipe manufacturing method and the plastic-wrapped C-shaped steel manufacturing method both wrap the C-shaped steel material with nylon material by injection molding. Due to the high density of the nylon material layer, the overall weight of the automobile instrument panel cross beam is high, and the price of the nylon material is high, which leads to high cost of the automobile. Therefore, it is necessary to design an automobile instrument panel cross beam with higher cost performance. SUMMARY

[0003] The utility model discloses to solve the above -mentioned problem provides a kind of automobile instrument panel cross beam, using polypropylene and glass fiber composite material replaces part of the composite material of nylon and glass fiber, realize the lightweight of automobile while, reduce the cost of whole vehicle.

[0004] The utility model provides an automobile instrument panel cross beam, which comprises:

[0005] The main beam, the first bushing, the steering column support and the second bushing are provided.

[0006] The main beam comprises a steel layer, a first composite layer and a second composite layer. The cross section of the steel layer is C-shaped. The first composite layer is wrapped around the outer surface of the left half side area of the steel layer. The second composite layer is wrapped around the outer surface of the right half side area of the steel layer.

[0007] The first composite layer is a nylon glass fiber composite material layer, and the second composite layer is a polypropylene glass fiber composite material layer.

[0008] The first bushing is arranged at the left end of the main beam and is used to connect with the A-pillar of the automobile.

[0009] The second bushing is arranged on the main beam and is fixedly connected with the bottom plate of the vehicle body.

[0010] The steering column support is arranged between the first bushing and the second bushing on the main beam and is connected with the steering wheel of the automobile.

[0011] Preferably, the first composite layer and the second composite layer are wrapped on the outer surface of the main beam by injection molding.

[0012] Compared with the prior art, the utility model can obtain following beneficial effects:

[0013] The main beam of the cross beam adopts a C-shaped steel material layer as a core component of the cross beam, the nylon glass fiber composite material layer and the polypropylene glass fiber composite material layer are wrapped on different positions of the main beam according to different strength requirements of different regions of the main beam, the polypropylene glass fiber has lower density, the overall stiffness requirement of the main beam is met, the overall quality of the main beam is reduced, the average quality can be reduced by 10% to 15%, the light weight of the whole vehicle is helped, and the polypropylene glass fiber has lower price than the nylon glass fiber, so the cost of the whole vehicle is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic diagram of the instrument panel cross beam structure according to the embodiment of the utility model;

[0015] Figure 2 It is a front view of the instrument panel cross beam structure according to the embodiment of the utility model;

[0016] Figure 3 It is a left view of the instrument panel cross beam structure according to the embodiment of the utility model.

[0017] The reference signs in the drawings include:

[0018] The main beam 1, the first composite layer 2, the second composite layer 3, the first bushing 4, the steering column support 5, the second bushing 6 and the steel material layer 7. DETAILED DESCRIPTION

[0019] Hereinafter, the embodiment of the utility model will be described with reference to the drawings. In the following description, the same modules are indicated by the same reference signs. In the case of the same reference signs, their names and functions are also the same. Therefore, the detailed description thereof will not be repeated.

[0020] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model will be further described in detail below by combining with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and do not constitute a limitation on the utility model.

[0021] As Figure 1 And Figure 2As shown, the utility model embodiment provides a kind of automobile instrument panel beam, including main beam 1, first bushing 4, steering column support 5 and second bushing 6, main beam 1 is the core part in instrument panel beam structure, bears the important total use of supporting instrument panel assembly and other system parts, main beam 1 must have enough strength, in the utility model embodiment, the core material of main beam 1 and steel material, can guarantee that main beam 1 strength meets support demand.First bushing 4 is located at the left end of main beam 1, and is connected with automobile A column, second bushing 6 is connected in the middle region of main beam 1, and main beam 1 is connected with automobile body floor through second bushing 6, steering column support 5 is arranged on main beam 1, between first bushing 4 and second bushing 6, and steering column support 5 is connected with the steering wheel of automobile.

[0022] Main beam 1 includes steel material layer 7, first composite layer 2 and second composite layer 3, as shown in Figure 3 As shown, the cross section of steel material layer 7 is C type, and steel material layer 7 traverses the whole main beam 1, and first composite layer 2 and second composite layer 3 are wrapped on the outer surface area of C type steel material layer 7 by injection molding. When looking in the direction of front view of instrument panel beam, the left half of main beam 1 is arranged in the main driver area of automobile, and the strength requirement of this area to main beam 1 is higher, and the right half of main beam 1 is arranged in the co-driver area of automobile, and the strength requirement of this area to main beam 1 is relatively lower than that of main driver, therefore, according to the strength requirement characteristics of main beam 1 in different areas, the utility model divides main beam 1 into high-strength area located in main driver area and low-strength area located in co-driver area, and the first composite layer 2 with higher strength is applied to wrap C type steel material layer 7 in high-strength area of main beam 1, and the first composite layer 2 adopts nylon and glass fiber mixed composite material, i.e. nylon fiberglass, and the second composite layer 3 with slightly lower strength than first composite layer 2 is applied in low-strength area of main beam 1, and the second composite layer 3 adopts polypropylene and glass fiber mixed composite material, i.e. PP fiberglass.

[0023] First composite layer 2 and second composite layer 3 border each other at the middle position of main beam 1, and first composite layer 2 and second composite layer 3 form complete and continuous wrapping layer on main beam 13, cover the whole main beam 1, and the utility model embodiment sets first composite layer 2 and second composite layer 3 into different colors, which is convenient for distinguishing and identifying. PP fiberglass has the advantages of low density and low price compared with nylon fiberglass, therefore, compared with wrapping nylon and glass fiber composite material on C type steel material layer 7 as a whole, wrapping C type steel material layer with the above two kinds of composite materials can effectively reduce the quality of main beam 1, and the average weight can be reduced by 10% to 15%, so as to realize lightweight and reduce the cost of whole vehicle.

[0024] The strength experiment is carried out on the instrument panel beam provided by the utility model, and it is verified that the radial load Z rigidity, radial load Y rigidity, static load rigidity, modal analysis and 2G loading of the instrument panel beam are qualified.

[0025] Although the embodiments of the present application have been shown and described above, it should be understood by those skilled in the art that the above embodiments are exemplary and should not be construed as limiting the present application. Those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

[0026] The specific embodiments of the present application described above do not constitute a limitation on the scope of protection of the present application. Any other corresponding changes and modifications made in accordance with the technical concept of the present application should be included in the scope of protection of the present application.

Claims

1. An automotive instrument panel cross-car beam characterized by, The utility model relates to a kind of automobile A column, including: Main beam, first bushing, steering column support and second bushing; The main beam includes steel material layer, first composite layer and second composite layer, the cross section of the steel material layer is C type, the first composite layer is wrapped in the outer surface of the left half side area of the steel material layer, and the second composite layer is wrapped in the outer surface of the right half side area of the steel material layer; The first composite layer is nylon glass fiber composite material layer, and the second composite layer is polypropylene glass fiber composite material layer; The first bushing is arranged at the left end of the main beam, for being connected with automobile A column; Second bushing is arranged on the main beam, and the second bushing is fixedly connected with the body floor; Steering column support is arranged between the first bushing and the second bushing on the main beam, and the steering column support is connected with automobile steering wheel.

2. The automotive instrument panel cross-car beam of claim 1, wherein, The first composite layer and the second composite layer are wrapped on the outer surface of the main beam by injection molding.

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