Anti-collision device for front end of vehicle body

Abstract

The invention discloses an anti-collision device for the front end of a vehicle body, and relates to the technical field of vehicle manufacturing. The anti-collision device comprises a front anti-collision beam, wherein the two ends of the front anti-collision beam are provided with main energy absorption boxes correspondingly, and the main energy absorption boxes are connected with a front longitudinal beam through mounting plates; and a pedestrian protection beam is arranged below the front anti-collision beam, the two ends of the pedestrian protection beam are connected with the adjacent mounting plates through auxiliary energy absorption boxes correspondingly, the two mounting plates are correspondingly connected with two oppositely-arranged auxiliary frame front extension beams, and the two auxiliary frame front extension beams are connected with an auxiliary frame. Compared with the prior art, according to the anti-collision device for the front end of the vehicle body, by increasing a force transferring path of the collision force, the collision kinetic energy is effectively shared, the stress of the front longitudinal beam is reduced, the minimum position of the size of thecross section of the front longitudinal beam in the Y direction is reduced to 45 mm, the excellent collision resistance of the vehicle body can be ensured under the condition that the large tire envelope and the large displacement engine arrangement are met, and the occupant safety is effectively protected.

Description

technical field [0001] The invention relates to the technical field of automobile manufacturing, in particular to an anti-collision device for the front end of a vehicle body. Background technique [0002] The collision safety performance of automobiles has been paid more and more attention. As the skeleton of automobiles, the body plays a vital role in collision safety. In order to improve the crash safety performance of automobiles, currently such as figure 1 The front-end anti-collision device shown includes a front anti-collision beam 101 , and two ends of the front anti-collision beam 101 are respectively equipped with energy-absorbing boxes 102 . When a frontal collision or a frontal offset collision occurs, the collision force is mainly transmitted to the front longitudinal beam 104 through the front anti-collision beam 101 and the energy-absorbing box 102, and then to the passenger compartment. As an important force-bearing member, the front longitudinal beam's cro...

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Problems solved by technology

[0003] The problem to be solved by the present invention is to provide an anti-collision device for the front end of the vehicle body, which can solve the problem that the Y-direction dimension of the front longitudinal beam section of the existing front-end anti-collision device is reduced to 45 mm, which meets the requirement of large tire envelope and large displacement. In the case of engine layout, it is difficult to ensure that the body has excellent crashworthiness

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