Composite material rear cabin door and design method thereof

Abstract

Disclosed is a composite material rear cabin door. The composite material rear cabin door comprises a rear cabin door body and is characterized by comprising a skin, a skeleton and a mounting seat inside the skeleton which are integrally formed through RTM (resin transfer molding) technology, wherein the skin is in a sandwich structure composed of two layers of fiber reinforced composite materialsand a foam interlayer between the fiber reinforced composite materials and meanwhile is in an outwards swelled curved structure; the skeleton is composed of aluminum alloy pipes and FRP (fiber reinforced plastics) extruded pipes; the mounting seat is in a sandwich structure composed of two layers of hinged aluminum sheathed plates and a hinged steel plate clamped between the hinged aluminum sheathed plates; foam layers are filled between the mounting seat and the skin. The composite material rear cabin door is high in overall rigidity, improves the connecting reliability of the rear cabin door body, a vehicle body and other parts, optimizes the structural design of the rear cabin door body, ensures the strength of the rear cabin door body, prolongs the service life and is convenient to mount and dismount. The invention also provides a design method of the composite material rear cabin door.

Description

technical field [0001] The invention relates to a composite material rear hatch and a design method thereof, belonging to the field of new energy bus manufacturing. Background technique [0002] As an important part of the car body parts, the rear hatch is usually set at the rear of the vehicle and often needs to be opened and closed. It is mainly used to protect important components and equipment such as the engine compartment of a passenger car. Therefore, in the design of the rear hatch door panel of an electric vehicle , its structural design is very critical, and it is related to the safety, reliability, portability, and flexibility of the hatch opening and closing. [0003] At present, most of the rear door structures of passenger cars on the market are aluminum alloy panels and aluminum alloy frames, which are bonded. The main disadvantage of this structure is that there are too many spare parts in the rear hatch assembly, so the installation of the whole hatch is to...

AI Technical Summary

Problems solved by technology

The main disadvantage of this structure is that there are too many spare parts in the rear hatch assembly, so the installation of the entire hatch is too cumbersome

In addition, aluminum alloy materials are heavier than composite materials. On the basis of achieving the same strength, composite materials are 39% lighter than them. New energy vehicles use plastic instead of steel, and under the development trend of light weight and weight reduction, the aluminum alloy rear compartment Doors are far from meeting the requirements of current new energy technologies

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