Patent ID: 8308227

Claim:
A side part structure of a vehicle body comprising: a rocker that is a hollow member having an outer rocker and an inner rocker which are arranged at a side part of a vehicle body and extend in the anteroposterior direction of the vehicle body; a first load transmission member joined to the outer rocker, the first load transmission member being ring-shaped and including a first facing wall extending in a vertical direction, a first opposite wall extending in the vertical direction and opposite the first facing wall, a first upper connecting wall which connects an upper end of the first facing wall and an upper end of the first opposite wall, and a first lower connecting wall which connects a lower end of the first facing wall and a lower end of the first opposite wall so as to present a hollow interior; and a second load transmission member joined to the inner rocker, the second load transmission member being ring-shaped and including a second facing wall extending in the vertical direction and facing the first facing wall, a second opposite wall extending in the vertical direction and opposite the second facing wall, a second upper connecting wall which connects an upper end of the second facing wall and an upper end of the second opposite wall, and a second lower connecting wall which connects a lower end of the second facing wall and a lower end of the second opposite wall so as to present a hollow interior, wherein the first facing wall is formed with a convex portion which protrudes towards the second load transmission member and the second facing wall is formed with a concave portion which is recessed inward in a vehicle width direction, wherein the convex portion includes a first vertical wall which extends in the vertical direction and is further inside in the vehicle width direction than a center of the rocker, a first upper wall which is bent at an upper end of the first vertical wall, and a first lower wall which is bent at a lower end of the first vertical wall, wherein the concave portion includes a second vertical wall which extends in the vertical direction and is further inside in the vehicle width direction than the first vertical wall, a second upper wall which is bent at an upper end of the second vertical wall, and a second lower wall which is bent at a lower end of the second vertical wall, and wherein the convex portion and the concave portion are engageable with each other.