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Car engine hood bounce device based on pedestrian head injury protection

A technology for hood and head damage, which is applied in the directions of pedestrian/occupant safety arrangement, superstructure, vehicle components, etc., can solve the problems of high cost, unreusable gunpowder type pop-up device, and inability to control the pop-up acceleration, etc. The effect of stable rotation speed, reduced overall mass and simple structure

Inactive Publication Date: 2012-10-03
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The gunpowder pop-up device cannot be reused, and the cost is high
However, the traditional mechanical pop-up device has the problem of not being able to control the acceleration of the pop-up

Method used

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  • Car engine hood bounce device based on pedestrian head injury protection
  • Car engine hood bounce device based on pedestrian head injury protection
  • Car engine hood bounce device based on pedestrian head injury protection

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Experimental program
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Embodiment Construction

[0021] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0022] Refer to the attached Figure 1 to Figure 4 , the car engine hood pop-up device of the embodiment of the present invention will be described.

[0023] figure 1 It is an overall view of the hood pop-up device of the present invention.

[0024] Whole device comprises three main parts such as motor 2, screw nut mechanism 3 and hinge mechanism 4, is fixed on the car body by motor support 1. The motor 2 is controlled by the central processing unit of the vehicle. When the motor 2 receives the signal of the collision between the vehicle and the pedestrian or the collision completion signal sent by the central processing unit, the motor 2 turns on and drives the screw nut mechanism 3 to move upward or downward, causing the hinge mechanism to ...

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Abstract

The invention discloses a car engine hood bounce device based on pedestrian head injury protection and relates to a bounce device for lifting a car engine hood, aiming to achieve the purpose that when a car is collided with a pedestrian, the car engine hood can be automatically bounced so as to increase an energy absorbing space and provide injury protection for the head of the pedestrian. The device comprises a driver, a lifting mechanism and a supporting mechanism, wherein the driver is a servo motor and connected with a car body through a motor supporting frame; the lifting mechanism consists of a lead screw and a nut and is used for lifting the engine hood when the car is collided with the pedestrian; and the supporting mechanism is a hinge device and used for connecting and rotating the engine hood. After a signal of colliding the pedestrian is received by the whole bounce device, the nut of the lifting mechanism is driven to rotate at a high speed by the driver to ensure that the lead screw is upwards moved relative to the nut so as to drive a hinge to rotate and support the engine hood to be upwards opened for providing protection for the pedestrian.

Description

technical field [0001] The invention relates to the field of pedestrian protection for automobile collision safety, in particular to a car engine hood pop-up device based on pedestrian head injury protection. Background technique [0002] Generally speaking, when a moving car collides with a pedestrian, due to the effect of inertia, the upper body of the pedestrian will turn around in the direction of the vehicle body, causing the head of the pedestrian to collide with the hood. Because there are many hard points under the hood (such as the shock tower, the engine, the lower frame of the front windshield, etc.), the pedestrian's head collides with the hard points to generate a huge acceleration, which is likely to cause head injury. [0003] In the prior art, some bonnets with safety measures are also arranged. The rear end of this bonnet can be automatically opened and lifted to a predetermined height when the vehicle collides with pedestrians, while under normal driving co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R21/38B62D25/12
Inventor 聂进李凡王丙雨赵喜磊杨济匡
Owner HUNAN UNIV
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