STRUCTURE FOR JOINT AT SIDE SECTION OF VEHICLE

摘要

There is provided a vehicle side portion joining portion structure capable of promoting a reduction in weight of a vehicle body and of effectively suppressing vibrations and deformations of a pillar, regardless of structures of the pillar and a rocker and the like. A pillar reinforcement member 50 is joined to an interior of a foot portion 48 of a pillar outer 44 that is formed with an open cross section in which a vehicle width direction inner side is opened. At a vehicle forward side of the foot portion 48, a front side closed cross section is formed at a vehicle front side portion of the foot portion 48 by a total of four faces: a vehicle width direction outer side wall face 44A of the pillar outer 44, a vehicle forward side wall face 44B, a front side dividing wall 50A and a triangular front side dividing wall 50E. At a vehicle rearward side of the foot portion 48, a rear side closed cross section is formed at a vehicle rear side portion of the foot portion 48 by a total of four faces: the vehicle width direction outer side wall face 44A, a rear side dividing wall 50B, a triangular rear side dividing wall 50F and a vehicle rearward side wall face 44C. Thus, cross-sectional crushing of the foot portion 48, which is curved in a side view, of the pillar outer 44 when an external force acts on the pillar outer 44 may be suppressed. Therefore, deformations in which a center pillar 16 collapses in a vehicle body front or rear direction or in a vehicle body inner or outer width direction, and vibrations and the like, may be effectively suppressed.