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Automobile engine hood used for improving safety of pedestrians

An automobile engine and safety technology, which is applied in the direction of pedestrian/occupant safety arrangement, vehicle safety arrangement, vehicle components, etc., can solve the problems of insufficient pedestrian protection, poor cushioning energy absorption performance, heavy quality, etc., and achieve overall stiffness reduction, Excellent cushioning performance and weight reduction effect

Pending Publication Date: 2019-08-23
DONGGUAN POLYTECHNIC
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

It has heavy weight and strong rigidity, but its cushioning and energy absorption performance is poor, and the degree of protection for pedestrians is not enough

Method used

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  • Automobile engine hood used for improving safety of pedestrians
  • Automobile engine hood used for improving safety of pedestrians
  • Automobile engine hood used for improving safety of pedestrians

Examples

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Embodiment Construction

[0029] Attached below figure 1 to attach Figure 7 The present invention is described further:

[0030] Such as figure 2 A car engine hood for improving pedestrian safety is shown, including an inner panel 2 and an outer panel 1, and an aluminum honeycomb-EPP foam composite core material 3 is filled between the inner panel 2 and the outer panel 1, and the aluminum honeycomb-EPP The foam composite core material 3 includes a honeycomb aluminum core 31 and EPP foam 32 filled in part of the honeycomb cells 311 . When the thickness of the outer plate 1 is 0.34-0.45 mm and the thickness of the inner plate 2 is 0.25-0.35 mm, the cross-section of the honeycomb cell 311 of the honeycomb aluminum core 31 is a regular hexagon with a side length of 2.5-6 mm and a wall thickness of 0.05 mm. ~0.07mm, the density of EPP foam 32 is 20~60kg / m 3 , the weight of the engine cover of the present invention is lighter, energy absorption, moderate strength, and various performance indicators are...

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Abstract

The invention relates to the technical field of automobile structures, in particular to an automobile engine hood used for improving safety of pedestrians. The automobile engine hood comprises an inner plate and an outer plate. The thickness of the outer plate ranges from 0.34 mm to 0.45 mm, and the thickness of the inner plate ranges from 0.25 mm to 0.35 mm. The space between the inner plate andthe outer plate is filled with an aluminum honeycomb-EPP foam composite core. The aluminum honeycomb-EPP foam composite core comprises a honeycomb aluminum core and EPP foam with which the honeycomb aluminum core is filled. The cross section of a honeycomb cell of the honeycomb aluminum core is a regular hexagon, the side length from 2.5 mm to 6 mm, and the wall thickness ranges from 0.05 mm to 0.07 mm. The density of the EPP foam ranges from 20 kg / m3 to 60 kg / m3. Compared with a traditional engine hood, the engine hood has better buffer performance and buffer energy absorption, and thereforethe pedestrians can be protected better when collisions happen; and in addition, the weight of the engine hood is lower, and the effect of energy saving is obvious.

Description

technical field [0001] The invention relates to the technical field of automobile structures, in particular to an automobile engine cover for improving the safety of pedestrians. Background technique [0002] In recent years, my country's automobile industry has achieved leapfrog development. As a pillar industry of the national economy, the automobile industry has become increasingly prominent in promoting the economy. According to the data released by the National Bureau of Statistics in January 2019, as of the end of 2018, the number of cars in my country increased by 22.85 million compared with the previous year, an increase of 10.51%, reaching 240 million. However, the development of the automobile industry has also brought a series of problems to the society, such as safety problems, air pollution and energy shortage, among which the traffic safety problem is particularly prominent. [0003] According to the statistics of the World Health Organization (WHO), the numbe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R21/34B62D25/10B62D25/12
CPCB60R21/34B62D25/105B62D25/12B60R2021/343
Inventor 张燕琴
Owner DONGGUAN POLYTECHNIC
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