Patent ID: 8317258

Claim:
A frame structure for a vehicle, comprising: a pipe-shaped frame body provided to receive a load acting from the outside, the frame body having a first face portion on which a compressive force acts in case of the load acting, a second face portion on which a tensional force acts in case of the load acting, and a third face portion which is located between the first face portion and the second face portion and connects to the first face portion to form a corner portion therebetween; and a reinforcing member provided inside the frame body to extend in a longitudinal direction of the frame body, the reinforcing member having a base portion which extends along and away from the third face portion of the frame body, and plural convex portions which project from the base portion toward the third face portion of the frame member and have flat face portions at tips thereof, the flat face portions of the plural convex portions being joined to the third face portion of the frame body, the convex portions having plural convexities which are arranged to extend both in the longitudinal direction of the frame body and in a sectional direction of the frame body which is perpendicular to the longitudinal direction of the frame body, wherein said plural convex portions of the reinforcing member are arranged in zigzags such that the adjacent convex portions located in the longitudinal direction of the frame body partially overlap with each other having a specified longitudinal-direction overlap length, and the adjacent convex portions located in the sectional direction of the frame body partially overlap with each other having a specified sectional-direction overlap length.