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Car bumper provided with energy absorption and pedestrian protection device

A car bumper and pedestrian protection technology, applied in the field of car bumpers, can solve the problems of not being able to provide motion strokes, large system energy requirements, and unfavorable energy dissipation, etc., to prolong collision contact time, high energy consumption efficiency, and improve impact. The effect of goodness

Inactive Publication Date: 2012-12-26
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this solution directly connects the magneto-rheological damper between the driver and the bumper, which has a small movement displacement during a collision, so it cannot provide sufficient movement range
The patent (200910072399.3) proposes a bumper based on shape memory materials, which can be restored to its original shape by heating after a collision, so maintenance costs can be saved, but the system requires heating and requires a large amount of energy for the system; Metal material, high modulus of elasticity, not conducive to energy dissipation

Method used

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  • Car bumper provided with energy absorption and pedestrian protection device
  • Car bumper provided with energy absorption and pedestrian protection device
  • Car bumper provided with energy absorption and pedestrian protection device

Examples

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Embodiment 1

[0022] figure 1 The structure of Embodiment 1 of the present invention is shown. The automobile bumper with energy absorption and pedestrian protection device in this embodiment mainly consists of a decorative layer 1, a reinforcing plate 9, N damping units 3, N+1 rhombic mechanisms 4, It is composed of 2N+2 connecting plates 5, and N is a natural number. The rhombus mechanism 4 is connected with the damping unit 3 at intervals in sequence; among the other two vertices of each rhombus mechanism 4, one is installed on the reinforcing plate 9 through the connecting plate 5, and the other is installed on the front end 2 of the automobile bottom axle through the connecting plate 5 superior. Both the rhombic mechanism 4 and the damping unit 3 and the rhombic mechanism 4 and the connecting plate 5 are connected by hinge units 6 . The decorative layer 1 is installed on the reinforcing plate 9 .

[0023] The decorative layer 1 can be made of elastic materials such as plastic or rub...

Embodiment 2

[0026] image 3 The structure of another embodiment of the present invention is shown. In this embodiment, the automobile bumper with energy-absorbing and pedestrian protection device mainly consists of a decorative layer 1, a reinforcing plate 9, N connecting rods 8, and 2N+2 damping units 3. It is composed of N+1 diamond-shaped mechanisms 4 and 2N+2 connecting plates 5, where N is a natural number. The rhombus mechanism 4 is connected with the connecting rod 8 at intervals in sequence; among the other two apexes of each rhombus mechanism 4, one is installed on the reinforcing plate 9 through the connecting plate 5, and the other is installed on the front end 2 of the automobile bottom axle of the automobile through the connecting plate 5. superior. A damping unit 3 is installed between the opposite two vertices of each rhombus mechanism 4, between the rhombus mechanism 4 and the connecting rod 8, between the rhombus mechanism 4 and the damping unit 3 and between the rhombus...

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Abstract

The invention discloses a car bumper provided with an energy absorption and pedestrian protection device. Collision energy is dispersed and consumed by adopting a rhombus-shaped mechanism and a damping unit; and the rhombus-shaped mechanism is used for transmitting energy in a collision process into a transverse direction so as to reduce the vertical impact force between a pedestrian and a car body. Meanwhile, the deformation of the rhombus-shaped mechanism can provide a certain safe buffering distance for the collision process to prolong the collision contact time and reduce the magnitude of collision force. The energy decomposed by the rhombus-shaped mechanism is transmitted to the damping unit, and the kinetic energy is converted into heat energy through the relative movement of the damping unit; and finally, the collision energy is consumed. Therefore, the collision force can be decomposed, the collision energy is consumed, the collision contact time is prolonged, the stress of people and the car in the collision process is improved, and further, the safety of people and the car is protected to the greatest extent.

Description

technical field [0001] The invention relates to an automobile bumper, in particular to an automobile bumper with the function of dissipating collision energy. Background technique [0002] Traffic accidents are one of the important causes of human and property losses. How to fully protect pedestrians during a collision is one of the important factors to be considered in bumper design. At present, bumper designs have the following forms: bumpers made of polymer and plastic materials; bumpers with energy buffering functions made of elastic structures; bumpers with energy decomposition or transmission functions using hydraulic or pneumatic technology ; and bumpers with active or semi-active controls. [0003] Traditional automobile bumpers mostly adopt the first two designs, that is, they are made of materials such as elastic materials or plastics. The bumper, made of plastic, is a one-piece component that deforms or crushes during impact and has a certain degree of energy a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R19/18B60R19/20B60R21/34
Inventor 邹鸿生李华胡舜迪
Owner ZHEJIANG UNIV
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