Patent attributes
An under-body frame of a vehicle may include a floor constituting a lower part of a vehicle, rear side frames installed at both side ends of a rear portion of the floor, mounting brackets which are installed in front of wheel arch portions of the rear side frames, respectively, and in and to which front ends of trailing arms of a rear suspension device are inserted and fixed, and/or a rear cross member installed to extend across the floor from a side of the floor to the opposite side of the floor and having both ends fixed to the mounting brackets which are installed at opposite sides, respectively. With the under-body frame, it is possible to increase fixation security of a trailing arm of a suspension device and enhance safety of inside parts of a vehicle when a rear impact occurs.
