Structure for front part of vehicle body

Abstract

A structure for the front part of a vehicle body includes left and right front side frames (40L, 40R) provided with at least left and right front bending sections (61L, 61R), left and right intermediate bending sections (62L, 62R), and left and right rear bending sections (63L, 63R). Due to a collision load (fs) applied to the front end of the vehicle body (11), the left and right front bending sections (61L, 61R) bend so as to protrude inward in the width direction of the vehicle and thereby grasp and restrain a power unit (20) from both sides in the width direction of the vehicle. The left and right intermediate bending sections (62L, 62R) are located at a distance rearward from the left and right front bending sections (61L, 61R). The left and right rear bending sections (63L, 63R) are located at a distance rearward from the left and right intermediate bending sections (62L, 62R), bend outward in the width direction of the vehicle due to the collision load (fs), and absorb collision energy when subjected to a collision with the power unit (20) which moves backward together with the left and right front bending sections (61L, 61R) due to the collision load (fs).

Description

technical field [0001] The present invention relates to a vehicle body front structure in which left and right front side frames capable of mounting a power unit are improved. Background technique [0002] Common vehicles such as automobiles have left and right front side frames at the front of the vehicle body. The left and right front side frames extend from the lower panel of the dashboard toward the front of the vehicle body, and can mount a power unit such as an engine unit. [0003] The left and right front side frames can be plastically deformed by a collision load (frontal collision load) acting on the front end of the vehicle body from the front. At this time, the power unit moves toward the rear of the vehicle body and touches the lower panel of the instrument panel. In contrast, it is desired to improve the performance of protecting occupants located in the vehicle interior behind the dashboard lower panel. In order to improve the protection performance for the...

AI Technical Summary

Problems solved by technology

In order to sufficiently absorb the collision energy, the left and right mounting brackets for connecting the subframe need to be large, and the weight of the vehicle body will increase.

Furthermore, the vehicle body front structure known in the above-mentioned Patent Document 5 is a structure that can be applied only when the left and right mounting brackets for connecting the subframe are provided.

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