Automobile roof beam with bending resistance and manufacturing method thereof

Abstract

The invention relates to an automobile roof cover beam with bending resistance. The automobile roof cover beam with bending resistance includes a hollow beam made of carbon fibers, microstructured fillers and a carbon fiber laminate, wherein the microstructured fillers are bonded to the carbon fiber laminate and are arranged in the hollow beam; the hollow beam is a variable diameter square tube, and comprises an upper wall, a lower wall and left and right side walls; the upper wall is curved with a thick intermediate portion and two thin end portions; the cross section of the microstructured filler has a structure in which columnar bodies are intersected at one point, and two ends of the columnar body are semicircular; the microstructure is filled in the roof beam, so as to improve the impact energy absorption effect of the roof beam; and in order to enhance the rigidity of the roof beam, the carbon fiber composite material with high specific strength and high specific modulus is adopted, and is combined with the loading feature of the roof beam, the hollow beam adopts the structure with two thick sides and a thick intermediate portion, thus optimizing distribution of the material, improving the strength of the roof beam, thereby further obtaining a good safety effect.

Description

technical field [0001] The invention relates to the field of automobile parts manufacturing, in particular to an automobile roof beam with anti-bending properties and a manufacturing method thereof. Background technique [0002] With the popularization of passenger cars, the safety of passenger cars has attracted increasing attention. The safety of automobiles is divided into active safety technology and passive safety technology. Among them, the active safety technology is mainly used to help drivers avoid traffic accidents before the collision of the vehicle, and the passive safety technology comes to the maximum after the collision of the car. Minimize the injury to the driver or occupant of the vehicle. [0003] Present anti-deformation technology of vehicle body is mainly used in the front part, side part, rear part of vehicle body, does not take effective measure for the deformation of roof. Although a general collision will not cause the roof to deform enough to inj...

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Problems solved by technology

[0003] The current body anti-deformation technology is mainly used for the front, side, and rear of the body, and no effective measures have been taken for the deformation of the roof

Although a general collision will not cause the roof to deform enough to injure the occupants, the vehicle often rolls due to the collision. At this time, there will be a large external force acting on the roof, which may cause a large deformation on the roof. deformation, and hurt the occupants, so it is very important to strengthen the safety protection of the roof

[0004] Under the current technology, the design of many car models only considers the supporting function of the roof beam, and there is no special design in terms of safety. The crossbeam is designed as a hollow steel thin-walled structure or a solid perforated steel plate structure, which cannot play a good role in buffering and shock absorption. This makes the accidents of casualties caused by roof deformation frequently occur when passenger cars roll over. occur

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