Engine hood lifting device

Abstract

The invention relates to an automobile component, in particular to a hood lifting device. It includes an upper top cover, a sleeve, a piston, a lower bottom cover and a gas generator, the upper top cover is in contact with the inner side of the engine cover, the bottom of the lower bottom cover is fixed on the vehicle body, and the upper top cover is connected to the The upper end of the sleeve is fixedly connected by bolts, the lower bottom cover and the lower end of the sleeve are fixedly connected by bolts, the piston mechanism is located in the sleeve, and the upper end of the piston mechanism is the piston rod part, so The upper end of the piston mechanism is fixedly connected with the upper top cover, the lower end of the piston mechanism is a piston part, the lower end of the piston mechanism is fixedly connected with the lower bottom cover, and the gas is provided in the lower bottom cover A generating device, and the gas generating device penetrates through the sleeve. The new active hood lifting device can make early warning judgments of dangerous situations before a person-vehicle collision, and gain valuable time for pedestrian protection.

Description

technical field [0001] The invention relates to an automobile part, in particular to an engine cover lifting device. Background technique [0002] In the traffic accidents of human-vehicle collision, the pedestrian's head injury accounts for a very high proportion. Head injuries account for 62% of pedestrian deaths. Therefore, the focus of pedestrian protection is to avoid or reduce pedestrian head injuries in human-vehicle collisions. The hood lifting technology is to raise the rear end of the hood to a certain height before the head of the pedestrian comes into contact with the hood, so as to increase the space under the hood and prevent the head of the pedestrian from colliding with the hard point under the hood, thus improving the pedestrian head. A new technology for internal protection effect. The head injury of pedestrians can be effectively reduced by adopting the hood lifting technology. [0003] There are two main types of hood lifting devices at present: gas ge...

AI Technical Summary

Problems solved by technology

[0003] There are two main types of hood lifting devices at present: gas generator type and mechanical gas generator type lifting device, which generates instantaneous high-pressure gas through chemical reaction to push the rear end of the hood up, and responds quickly, but it is a one-time use product. The maintenance cost after use is high; the mechanical lifting device lifts the engine hood by releasing the loaded spring or high-pressure gas, the structure is complex and the volume is large, but it can be used reversibly and the cost is low

[0004] At present, some high-end models have adopted the gas generator type hood lift device; the mechanical reversible hood lift device is still in the research stage

Images