Abstract: A vehicle front body structure includes an upper member extending from the lower end of a front pillar in a forward direction of a vehicle body and disposed outward a front side frame in a transverse direction of the vehicle body. The upper member has a substantially rectilinear configuration and is arranged to slope upward in a rearward direction of the vehicle body so that a load applied to a front end portion of the upper member can be born by the front pillar.

Abstract: A vehicle body frame structure includes a first frame member having a high strength and a second frame member having a strength lower than that of the first frame member. The first frame member and the second frame member are joined integrally in line with each other, and the second frame member has a locally reinforced region in a joined section by fixation of a support member for supporting a part. The structure further includes a joint stiffener fixed to the second frame member. The stiffener functions so that the strength of the joined section gradually decreases from the first frame member to the second frame member.

Abstract: A vehicle body frame structure includes a first frame member having a high strength and a second frame member having a strength lower than that of the first frame member. The first frame member and the second frame member are joined integrally in line with each other, and the second frame member has a locally reinforced region in a joined section by fixation of a support member for supporting a part. The structure further includes a joint stiffener fixed to the second frame member. The stiffener functions so that the strength of the joined section gradually decreases from the first frame member to the second frame member.