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Engine hood pop-up device beneficial to pedestrian protection

A technology for engine hood and pedestrian protection, applied in pedestrian/occupant safety arrangement, transportation and packaging, vehicle safety arrangement, etc., can solve problems such as inconvenient arrangement and complex structure, and achieve reduced maintenance costs, simple mechanical structure, and strong applicability Effect

Inactive Publication Date: 2012-07-18
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, many companies have adopted this technology, but most of them are irreversible gunpowder pop-up systems, and a few mechanical systems also have the disadvantages of complex structure and inconvenient layout.

Method used

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  • Engine hood pop-up device beneficial to pedestrian protection
  • Engine hood pop-up device beneficial to pedestrian protection
  • Engine hood pop-up device beneficial to pedestrian protection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0023] The invention provides an engine hood pop-up device that is beneficial to pedestrian protection. It includes a sensor, an electronic control unit, and a dual-rocker bonnet pop-up mechanism. The electronic control unit is connected to the sensor and the double-rocker bonnet pop-up mechanism. connection.

[0024] Such as Figure 1~4 As shown, the dual rocker hood pop-up mechanism includes a base 1, an energy storage sleeve 2, a rocker 3, a connecting rod 4, an upper hinge 5, a torsion spring 6, a trigger mechanism and a pre-compression mechanism; The base 1 is fixedly installed on the side wall of the vehicle engine compartment. The energy storage sleeve 2 is installed at the lower part of the base 1. One end is connected to the base through a rotating shaft 1-2, and the other end is connected to a rocker through a pin 2-3 3 connection; the rocker 3 is connected to the base 1 through a rotating shaft 1-3; one end of the connecting rod 4 is connected to the rocker 3 through ...

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Abstract

The invention discloses an engine hood pop-up device beneficial to pedestrian protection, including a sensor, an electronic control unit and a dual-rocker engine hood pop-up mechanism. The dual-rocker engine hood pop-up mechanism includes a base, an energy storage sleeve, rockers, a connecting bar, an upper hinge, a torsion spring and a trigger mechanism; in normal cases, rockers run around the rotation center of the base, the energy storage sleeve runs around the rotation center of the base, the rockers and the pin of the energy storage sleeve are collinear, and the torsion spring and the energy storage sleeve are in energy storage state; when collision is inevitable, rockers rotate around a second rotating shaft during the process in which the torsion spring and the energy storage sleeve recover to the free state, a latch on the front end of the engine hood is driven by the connecting bar and the upper hinge to rotate, in order to pop the rear end of the engine hood up. Compared with the prior art, the invention has advantages of convenient arrangement, simple structure and repeatable action.

Description

Technical field [0001] The invention relates to an engine hood pop-up device, in particular to an engine hood pop-up device that is beneficial to pedestrian protection. Background technique [0002] In recent years, governments and automobile manufacturers have paid more and more attention to the pedestrian protection performance of automobiles. Among them, since 30% of pedestrian injuries and 60% of pedestrian deaths are caused by head injuries, more and more pedestrian head protection technologies have been developed. The test of the head module impacting the hood shows that the larger the free space under the hood, the smaller the head injury value (HIC). Active hoods that can bounce the hood to a certain height are used and developed. At present, many companies have adopted this technology, but most of them are irreversible gunpowder-type pop-up systems. A few mechanical systems also have the disadvantages of complex structure and inconvenient layout. Summary of the invent...

Claims

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Application Information

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IPC IPC(8): B60R21/34B62D25/12
Inventor 陈吉清刘庭志兰凤崇何洋志
Owner SOUTH CHINA UNIV OF TECH
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