Patent ID: 8480102

Claim:
A lower vehicle-body structure of a vehicle, comprising: a pair of front side frames extending in a longitudinal direction at both sides of a front portion of a vehicle body; a sub frame arranged between the front side frames and supporting a suspension member; a pair of arm members constituting part of the suspension member; a front connecting member swingably supporting a front portion of each arm member at the sub frame; a rear connecting member swingably supporting a rear portion of each arm member at the sub frame and each front side frame, the rear connecting member comprising a support portion to support each arm member, a first connection portion to connect a connected portion of the sub frame and the support portion, and a second connection portion to connect a connected portion of each front side frame and the support portion; and a separation mechanism to separate the second connection portion of the rear connecting member from each front side frame by an impact load from a vehicle front in a vehicle frontal collision.