A crease-type crash energy-absorbing box

A technology of collision energy absorption and wall surface, applied in the direction of bumpers, etc., can solve the problems of low specific energy absorption rate and low load uniformity coefficient, and achieve the effects of low load uniformity coefficient, low production cost and convenient processing

Active Publication Date: 2012-02-22
王博 +1
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  • Summary
  • 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 manufacture and install, and to solve the problem of simultaneously satisfying high specific energy absorption rate and low load uniformity coefficient

Method used

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  • A crease-type crash energy-absorbing box
  • A crease-type crash energy-absorbing box
  • A crease-type crash energy-absorbing box

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1: figure 1 An embodiment of a crash box with a rectangular equal cross-section.

[0033] The so-called crash box 1 with a rectangular equal section means that the section 2 of 1 is rectangular. With the second process, 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-section crash box, figure 2 (b) 8 is a schematic diagram of the half-shell after compression molding, which is used to elaborate figure 1 The shape design of the crash box 1 with a rectangular equal section. In the present invention, the crash box adopts a modular form, wherein the module 5 refers to the smallest unit that can represent the shape of the crash box. Crash boxes of different lengths can be obtained by superimposing several modules in the axial direction. 6 describes the unfolded shape of the half-shells of the two modules, and their lengths in the axial direction do not have to be the same. Th...

Embodiment 2

[0035] Example 2: Figure 4 An embodiment of a crash box with a triangular equal section.

[0036] Using the second process, the box is assembled from three identical one-third shells. Figure 5 (a) 12 is the plane expansion of one-third of the triangular equal-section crash box, Figure 5 (b) 13 is a schematic diagram of the one-third shell after compression molding, which is used to elaborate Figure 4 The shape design of the crash box 10 with a triangular equal section. The module 11 refers to the smallest unit that can represent the shape of the crash box. Crash boxes of different lengths are obtained by superimposing several modules in the axial direction, and 12 describes the shape of one-third shells of the two modules after unfolding, and the length of each module in the axial direction does not have to be the same. According to the definition of crease lines in Example 1, the same mold pressing is performed on 12 in this example, and finally a formed third shell 1...

Embodiment 3

[0037] Example 3: Image 6 An embodiment of a hexagonal crash box with equal cross-section.

[0038] Image 6 Middle 14 is the collision absorbing box of hexagonal equal section. During the forming process, six identical six-sixth shells are pre-pressed and then assembled, or two half-shells are pre-pressed and identical, and then assembled. The implementation method is the same as the above two embodiments.

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Abstract

A crease-type collision energy-absorbing box belongs to the technical field of automobile body structure manufacturing. It is characterized in that the thin-walled pipe fitting introduced with crease lines is used as a crash energy-absorbing box, and the final deformation mode of the collision deformation section is guided by the crease lines. Compared with ordinary thin-walled tubes, the obvious feature of the present invention is that a thin-walled tube is divided into several modules along the axial direction, and each corner area of ​​each module has a diamond-shaped concave corner at a certain distance along the axial direction. A thin-walled pipe with a creased pattern is thus formed. The effect and benefit of the present invention is that by introducing the crease pattern, the crash absorbing box can meet the requirements of high specific energy absorption rate and low load uniformity coefficient at the same time; the crease shape of the invention is easy to form, and the surface of the entire structure is an expandable surface , the advantage is that the whole structure can be directly formed by a thin plate, which makes the processing more convenient, greatly reduces the production cost, and the processing accuracy can also be improved.

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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Patent Type & Authority Patents(China)
IPC IPC(8): B60R19/34
Inventor 马家耀由衷王博程耿东
Owner 王博
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