Structure for end part of vehicle

Abstract

A structure for an end part of a vehicle has improved impact absorbing performance. During a frontal collision of a vehicle, a perpendicular cross-section of a crush box (50) taken perpendicular to the front-rear direction of the vehicle deforms into a hexagonal shape. The deformation of the perpendicular cross-section forms new ridge lines (R11, R12, R13, R14) extending from the vicinities of both ends, in the widthwise direction of the vehicle, of the rear end sections, with respect to the vehicle, of the upper surface (52) and the lower surface (54) of the crush box (50) to the vicinities of both ends of a joint section (S) in the widthwise direction of the vehicle. The increase in the number of the ridge lines in the front-rear direction of the vehicle (axial direction) increases the strength of the crush box (50) in the front-rear direction of the vehicle. Consequently, a load generated when the crush box (50) collapses in the front-rear direction of the vehicle increases, and as a result, the amount of energy absorption by the crush box (50) increases. That is, the impact absorbing performance of the crush box (50) is improved.

Description

technical field [0001] The invention relates to a vehicle end structure. Background technique [0002] Conventionally, a structure in which a crash box is provided between a front end portion of a side member and a bumper reinforcement has been practiced. In addition, energy is absorbed by causing the crash box to be crushed in the front-rear direction of the vehicle when the vehicle collides. [0003] Patent Document 1 discloses a technique in which protrusions are formed on the left and right side surfaces of a crash can (crash box) and are recessed inward and extend in the vertical direction, and protrusions are formed on the upper and lower surfaces and protrude outward. A protrusion extending in the width direction of the vehicle. In this prior art crash can (crash box), when a collision load in the front-rear direction greater than a predetermined value is input during a frontal collision, these ridges serve as the deformation starting point that becomes the starting...

AI Technical Summary

Problems solved by technology

[0004] However, since the protrusions of the crash cans (crash boxes) in the prior art are along the vehicle up-down direction and the vehicle width direction, it is considered that the crash cans (crash boxes) hardly increase in the vehicle front-rear direction and are crushed. The effect of the load produced when

Therefore, there is room for improvement in the above-mentioned prior art regarding improvement of shock absorbing performance

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