Front-end structure for vehicle

摘要

A front-end structure for a vehicle is provided with: front side frames, a subframe extending across a vehicle body floor front portion to support a suspension component and an electric power steering device, the subframe being supported at least at the front end portion and at the rear end portion and being formed in a subframe main body from a light alloy casting, and a pair of left and right extension arms that are fixed to the subframe main body and extend forward of the subframe main body, and that are formed from a light alloy or steel by press-molding. In the rear portion of the extension arms in the vicinity the subframe main body, provided is a recessed portion that serves as a point at which downward bending starts midway along the lengthwise direction of the subframe with an input load in the event of a vehicle frontal collision.

主权项

1. A front-end structure for a vehicle wherein: a subframe, which is provided across front side frames arranged along a vehicle lengthwise direction in left and right of a vehicle front-end portion and a vehicle body floor front portion to support a suspension component and an in-vehicle component, is supported at least at a front end portion and at a rear end portion of the subframe;
the subframe is provided with a subframe main body and at least one extension arm that extends forward of a front end portion of the subframe main body; and at a rear portion of the at least one extension arm and near the subframe main body, there is provided a weakened starting portion that serves as a point at which downward bending starts midway along the lengthwise direction of the subframe with an input load in an event of a vehicle frontal collision, wherein: on the rear end portion of the subframe, there is provided a fastening portion for attaching to the front portion of the vehicle body floor, and a rear end extension portion extends backward from the fastening portion to a position configured and arranged to be near the heels of a vehicle operator in a driving posture during vehicle operation, there is provided a front bulkhead that is attached to front end portions of the left and right front side frames, the subframe extension arm includes an extension arm main body, a rear end attachment portion provided on a rear end portion of the extension arm main body, and a front end attachment portion provided on a front end portion of the extension arm main body, the rear end attachment portion of the at least one extension arm is fixed to the subframe main body, the front end attachment portion of the at least one extension arm is fixed to the front bulkhead, and the weakened starting portion is formed at the rear end portion of the extension arm main body.