Patent ID: 8641131
Filing Date: 2014-02-04
Classification: B62D

Abstract:
1. A frame structure for a vehicle, comprising: a frame body formed to have a closed cross section; and a reinforcement body provided inside the frame body to reinforce the frame body, wherein said frame body comprises a first face portion and a second face portion which are provided away from each other and extend in a direction substantially perpendicular to a rotational-axis direction of a bending moment which occurs at the frame body when a torsional load acts on the vehicle body, and a pair of third face portions which are positioned between the first face portion and the second face portion and form corner portions together with the first face portion and the second face portion, respectively, and said reinforcement body comprises plural sets of portions, each set of which includes a S-shaped portion, a reverse S-shaped portion, and a partition-wall portion, the S-shaped portion being formed by a first third-face connection portion which is connected to one of the third face portions of the frame body, a first-face connection portion which is connected to the first face portion of the frame body at the corner portion between said one of the third face portions and the first face portion of the frame body, a second third-face connection portion which is connected to the other of the third face portions of the frame body, a second-face connection portion which is connected to the second face portion of the frame body at the corner portion between the other of the third face portions and the second face portion of the frame body, and a connection portion connecting said first-face connection portion and said second-face connection portion, in a S shape in a section perpendicular to a longitudinal direction of the frame body, the reverse S-shaped portion being formed by another first third-face connection portion which is connected to said one of the third face portions of the frame body, another second-face connection portion which is connected to the second face portion of the frame body at the corner portion between said one of the third face portions and the second face portion of the frame body, another second third-face connection portion which is connected to said other of the third face portions of the frame body, another first-face connection portion which is connected to the first face portion of the frame body at the corner portion between said other of the third face portions and the first face portion of the frame body, and another connection portion connecting said another second-face connection portion and said another first-face connection portion of the reverse S-shaped portion, in a reverse-S shape in the section perpendicular to the longitudinal direction of the frame body, the partition-wall portion being formed to extend in a sectional direction perpendicular to the longitudinal direction of the frame body, said reinforcement body comprising the plural sets of the S-shaped portions, the reverse S-shaped portions, and the partition-wall portions being provided inside said frame body such that each of said S-shaped portions and each of said reverse S-shaped portions are arranged one after the other in the longitudinal direction of the frame body via each of said partition-wall potions, whereby connection areas where the first-face connection portions of the reinforcement body are connected to the first face portion of the frame body are staggered and also other connection areas where the second-face connection portions of the reinforcement body are connected to the second face portion of the frame body are staggered.