Multistage embedded type octagonal automobile energy absorbing and buffering device

Abstract

The invention discloses a multistage embedded type octagonal automobile energy absorbing and buffering device to solve the problem of an existing automobile energy absorbing and buffering device and designs the energy absorbing and buffering device which is composed of multistage thin-wall energy absorbing cylinders in a embedded and cascaded mode. The multistage embedded type octagonal automobile energy absorbing and buffering device mainly comprises an outer layer thin-wall energy absorbing cylinder (1), an inner layer thin-wall energy absorbing cylinder (2), inter-layer thin-wall energy absorbing cylinder connecting plates (3) and a rear end installation plate (4), wherein both the outer layer thin-wall energy absorbing cylinder (1) and the inner layer thin-wall energy absorbing cylinder (2) of the energy absorbing and buffering device are of an octagonal structure, the inner layer thin-wall energy absorbing cylinder (2) is reduced by a certain length in the axial direction in comparison with the outer layer thin-wall energy absorbing cylinder (1), and therefore stage-by-stage energy absorption can be conducted through multiple layers of energy absorbing cylinders. Meanwhile, all layers of thin-wall energy absorbing cylinders are connected through the four thin-wall energy absorbing cylinder connecting plates (3), and stability in the automobile crashing process is increased. The multistage embedded type octagonal automobile energy absorbing and buffering device has the advantages of being high in specific energy absorption, large in average striking force, small in peak value of the striking force and the like.

Description

technical field [0001] The invention mainly relates to the field of automobile collision safety structure design, in particular to a multi-stage nested octagonal automobile energy-absorbing buffer device. Background technique [0002] With the increase of car ownership, car collision safety has gradually become an important issue. In the field of structural design, in order to ensure the safety of the occupants in the event of a car collision, a buffer energy-absorbing device is generally designed at the front end of the car, including car bumpers, car buffer energy-absorbing beams, etc. These buffer energy-absorbing structures are generally composed of a single circular energy-absorbing beam, square energy-absorbing beam or polygonal energy-absorbing beam. The energy-absorbing beam of these structures has poor energy-absorbing effect, and it is easy to generate a large collision force during the collision process. peak, causing serious injuries to the occupants. Moreover,...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention lies in: aiming at the problems existing in the existing automobile energy-absorbing buffer devices, the present invention provides a multi-level nested octagonal structure with high specific energy absorption, large collision force and low peak value of collision force. Automotive Energy Absorbing Buffer

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