Crease type crash energy absorption box

A technology of collision energy absorption and concave angle, which is applied to bumpers and other directions, can solve the problems of low load uniformity coefficient of specific energy absorption rate, etc., and achieve the effect of low load uniformity coefficient, convenient processing and low production cost.

Active Publication Date: 2010-02-03
王博 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a low-cost crash-absorbing box device that is easy to manufact

Method used

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  • Crease type crash energy absorption box
  • Crease type crash energy absorption box
  • Crease type crash energy absorption box

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032] Example 1: figure 1 An implementation of the rectangular equal cross-section collision energy absorbing box.

[0033] The so-called rectangular equal cross-section collision energy absorbing box 1 means that the cross section 2 of 1 is rectangular. Using the second processing technique, the box is assembled from two identical half-shells. figure 2 (a) 6 is the planar expansion of the half-shell of the rectangular equal cross-section collision energy absorbing box, figure 2 (b) 8 is a schematic diagram of the half-shell after it has been press-molded to explain in detail figure 1 The shape design of the collision energy absorbing box 1 with rectangular equal cross-section. In the present invention, the crash box adopts a modular form, where the module 5 refers to the smallest unit that can represent the shape of the crash box. Crash absorbing boxes of different lengths can be obtained by stacking several modules along the axial direction. 6 describes the shape of the two ...

Example Embodiment

[0035] Example 2: Figure 4 An implementation of the triangular equal cross-section collision energy absorbing box.

[0036] Using the second processing technique, the box is assembled from three identical one-third shells. Figure 5 (a) 12 is the flat expansion of one-third of the shell of the triangular equal section collision energy absorbing box, Figure 5 (b) 13 is a schematic diagram of the one-third shell after being pressed into shape, to explain in detail Figure 4 The shape design of the collision energy absorbing box 10 with a triangular constant cross section. The module 11 refers to the smallest unit that can represent the shape of the crash box. Crash absorbing boxes of different lengths are obtained by stacking a number of these modules along the axial direction. 12 describes the unfolded shape of the third shell of the two modules, and the length of each module along the axial direction does not have to be the same. According to the definition of the crease lines ...

Example Embodiment

[0037] Example 3: Image 6 An implementation of a hexagonal equal cross-section collision energy absorbing box.

[0038] Image 6 Middle 14 is a hexagonal equal cross-section collision energy absorbing box. In the molding process, six half-shells that are completely the same are pre-compressed and then assembled and molded, or two half-shells that are pre-compressed and that are completely the same are pre-compressed and then assembled and molded. The implementation method is the same as the above two embodiments.

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Abstract

The invention relates to a crease type crash energy absorption box, belonging to the technical field of manufacturing a motorcar body structure. The invention is characterized in that a thin-wall tubeprovided with crease grains is used as a crash energy absorption box, and the crease grains lead the final deformation mode of a crash deformation section. Compared with an ordinary thin-wall tube, the invention is obviously characterized in that one thin-wall tube is divided into a plurality of modules along an axial direction, and diamond-shaped concave angles are respectively arranged on eachcorner region of each module at certain intervals along the axial direction, thereby forming the thin-wall tube with the crease grains. The invention has the effects and the benefits that by providingthe crease grains, the crash absorption box can simultaneously meet the requirements on high ratio energy absorption efficiency and low load uniformity factor; the shape of the crease of the invention is convenient to be formed, the surface of the entire structure is expandable, and the advantage is that the entire structure can be directly formed by processing one thin flat plate, thereby enabling the processing to be much more convenient, greatly reducing the production cost and increasing the accuracy of processing.

Description

technical field [0001] The invention belongs to the technical field of automobile body structure manufacturing, relates to the safety structure design of automobile collision, and particularly relates to a collision energy-absorbing box device capable of absorbing impact kinetic energy in the automobile collision. Background technique [0002] The anti-collision performance of automobiles is a very important aspect in the overall safety design of automobiles. In the current car design, the bumper system installed at the front and rear of the car is usually used to ensure that the frame of the compartment structure is not seriously damaged under low-speed impact, so as to ensure the safety of the occupants in the car and the main structure of the car itself. In order to absorb the kinetic energy of the impact as much as possible, in the design of the current bumper system, a deformation element, the so-called crash box, is often added. [0003] Crash absorbing boxes are gene...

Claims

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Application Information

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IPC IPC(8): B60R19/34
Inventor 马家耀由衷王博程耿东
Owner 王博
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