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Automobile induced bumper

A technology for bumpers and automobiles, which is applied to bumpers and other directions, and can solve problems such as insufficient deformation of bumpers and brackets

Inactive Publication Date: 2006-08-09
NANJING AUTOMOBILE GROUP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The energy absorbed by the bumper (thin-walled beam) in bending is much smaller than that absorbed in the axial collision, so the bumper and bracket are not deformed enough to absorb the collision energy

Method used

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  • Automobile induced bumper
  • Automobile induced bumper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] Such as figure 2 shown. Some inducing structures 2 are processed on the curved and vertical parts of the bumper 1, and the inducing structures on the bumper can be some corner holes, semicircular grooves, square holes, V-shaped grooves, in-plane round holes, etc. or a combination of these holes. In order to facilitate the comparison of the shape and size of different induced structures, it is assumed that the reduction of the specimen section caused by the induced structure accounts for 0.55% and 2.22% of the original section of the thin-walled beam respectively. The geometric dimensions of the induced structure are shown in the table below. The distance between the geometric center of the induced structure and the impacted end of the thin-walled beam is 38 mm, which is equal to half the side length of the square section.

[0011] Specimen number

beam side length

thickness

length

induced structure side length

area ratio

induced struc...

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PUM

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Abstract

The invention relates to the auto bumper protecting the car when the car meeting the low speed collision, especially is one inducing bumper of the car. Some inducing structure is mounted on the winding parts and the erecting parts. And the inducing structure may be some the corneal hole, the semicircular flute, the square hole, the inner cover round hole. The merit of the invention consist the inducing structure of the bumper mounted on the stress concentrating locality, the inducing structure can be used to control the peak value force when thin cliff pole piece metamorphosing and draping. The impacting load is restricted, so the passenger. The strong wallop, the intension of the bumper and the bracket are matched. The wholly carrying capacity of the bumper system and the ability of absorbing the colliding energy are improved. When the vehicle with the bumper hits, the bumper can translate adequately the colliding energy to the distortionary energy of the bumper and reduce the hitting force. So the vehicle and personnel loss can be reduced.

Description

[0001] Involved areas [0002] The invention relates to an automobile bumper for protecting the automobile when the automobile collides at a low speed, in particular to an automobile induction bumper. Background technique [0003] In my country, the automobile industry has become a pillar industry, and the number of existing automobiles has reached tens of millions. However, traffic accidents on the road are gradually increasing. Among automobile collisions, the highest probability of occurrence is the collision of the front of the automobile. The main function of the car bumper is to ensure the safety of other car parts and occupants when the car collides at low speed. Therefore, it must have the function of buffering and energy absorption, and convert the energy generated during the collision into the deformation energy of the bumper. The bumper will undergo strong plastic deformation during the working process, resulting in a large strain. Because the bumper installed in t...

Claims

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Application Information

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IPC IPC(8): B60R19/18
Inventor 吴明张灶发朱正林朱壮瑞
Owner NANJING AUTOMOBILE GROUP CORP