Crease type crash energy absorption box

[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 module half shells after unfolding, and their lengths along the axial direction do not have to be the same. The surface of the half shell is a developable surface, and its advantages are that it is more convenient to use plate to press and form, the production cost is low, and the processing accuracy is high. 6 is the sheet blanking diagram. The creases 7 on the half shell are represented by solid lines and dashed lines on the plane, where the solid lines represent peak creases and the dashed lines represent valley creases. If folding or pressing with a mold according to the folds on the plane, the molded half-shell shown in 8 can be finally obtained. Compared with the ordinary rectangular tube half-shell, the half-shell has a diamond-shaped concave corner 3 on each of its corners. Since the half-shell contains two modules, there are four diamond-shaped concave corners 3 in total 8 after forming.

[0034] image 3 The thin-walled tube 1 is a rectangular equal cross-section collision energy absorbing box formed by overlapping half shells 8 made of two metal plates. The overlapping edges of the two half-shells 8 overlap, and they are welded to each other through the fixing points 9.

[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 in the embodiment 1, the 12 is subjected to the same mold pressing in this embodiment, and finally the molded one-third shell 13 is obtained, where 3 is a diamond-shaped concave corner. Figure 4 The middle 10 is a triangular equal cross-section collision energy absorbing box formed by overlapping one-third shells 13 made of three metal plates according to the assembly method of embodiment 1.

[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.