Patent ID: 8523273

Claim:
A vehicle body structure comprising: a pair of side members which extends in a front-and-rear direction of a vehicle; a pair of sub-side members juxtaposed below the pair of side members, respectively; a power unit arranged at a position surrounded by the pair of side members and the pair of sub-side members; and a member which connects a front end portion of the side member and a front end portion of the sub-side member, and extends in an up-and-down direction, wherein the sub-side member has, at a position ahead of the power unit with respect to load, a portion whose strength is made lower than a portion behind the position, wherein the side member has a deformation promoting portion which promotes deformation of the side member at a position ahead of the power unit with respect to load, wherein the member that extends in the up-and-down direction is arranged on the front side of the portion of the sub-side member whose strength is made low and of the deformation promoting portion in the side member, wherein the sub-side member folds and deforms downward in the portion whose strength is made low at a position ahead of the power unit with respect to load when the load is applied, wherein the portion whose strength is made lower than the portion behind the position includes an upper wall and two side walls, wherein the portion behind the position includes an upper wall and two side walls, wherein both upper walls are constituted by one rectangular plate, wherein the two side walls extend perpendicularly upward or downward from the respective upper wall on both sides with both the portion whose strength is made lower than the portion behind the position and the portion behind the position, wherein width of the two side walls of the portion whose strength is made lower than the portion behind the position in the up-and-down direction is smaller than that of the two side walls of the portion behind the position, and wherein at a location where a small width of the side wall of the portion whose strength is made lower than the portion behind the position and a large width of the side wall of the portion behind the position with respect to load meet, a lower end is inclined toward the front-and-rear direction of the vehicle.