Patent ID: 8393673
Filing Date: 2013-03-12
Classification: B60K,B62D

Abstract:
1. A front vehicle-body structure of a vehicle, comprising: a dash panel partitioning a vehicle room from an engine room at a front vehicle body; a front side frame connected to a front side of the dash panel and extending in a vehicle longitudinal direction, part of which is deformed so as to bend outwardly, in a vehicle width direction, by a collision load in a vehicle frontal collision; a sub frame provided at a lower portion of the front vehicle body and joined to the front side frame; a reinforcement provided at the front side frame, wherein said sub frame is joined to the front side frame via said reinforcement, and a front portion of the reinforcement is located at a position which corresponds to a bending portion of said front side frame which is to be deformed so as to bend outwardly, in the vehicle width direction, by the collision load in the vehicle frontal collision; a concave bead which is concaved outwardly, in the vehicle width direction, is formed at said bending portion of an inward side wall of said front side frame so as to extend vertically, said front side frame is configured so that a second bending portion thereof which is located in back of said bending portion bending outwardly and in front of a connection portion thereof to said dash panel is deformed so as to bend, in the vehicle width direction, by the collision load in the vehicle frontal collision, and a rear portion of said reinforcement is located at another position which corresponds to said second bending portion; a concave bead which is concaved inwardly, in the vehicle width direction, is formed at said second bending portion of an outward side wall of said front side frame so as to extend vertically, said front side frame has a closed cross section which extends in the vehicle longitudinal direction, and said reinforcement is arranged inside said closed cross section, a suspension tower is joined to said front side frame, said bending portion of the front side frame is provided in front of a joint portion of the front side frame to said suspension tower, and said sub frame is joined via the reinforcement to a specified position of the front side frame near said joint portion; and a branch frame is provided so as to extend upwardly and rearwardly from a front portion thereof which connects to a specified position of said front side frame near said joint portion to said suspension tower and has a rear portion thereof which connects to said dash panel.